Please be aware this article has MAJOR spoilers for The 100 Season 4 finale "Praimfaya". We're talking a whole apocalyptic bunker full of spoilers.

Well, that was a doozy, eh? The 100 may have fumbled in Season 3, but Season 4 has been a proud uphill climb back to the glory days, with each new episode improving on the last, and the finale ranks as one of the finest episodes in the series to date.

In "Praimfaya", a number of fan theories finally came to fruition. For one thing, part of Skaikru went back to space, with a couple of grounders in tow. Not only that, but the series essentially returned to to the triad we met in the first two seasons: Arkers, Grounders and Mountain Men. And then there was the long-speculated time jump, but not the five-year gap we expected. Instead, the final minutes of the finale jumped ahead six years and seven days...and then they threw an even bigger wrench in what we expected -- this is The 100 after all -- with the arrival of a prison transport vehicle and a mysterious young girl. So who have our faves become in the time jump, which was longer than the time we spent with them in all four seasons to date, and will they find a way to work together when they're finally reunited?

Let's take a look at the major finale questions below, and be sure to also check out our finale explainer.

What's Going on in the Bunker?

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Image via The CW

Not only is Clarke not able to reach Bellamy and the new Skaikru, she says it's been radio silence from the bunker as well, which leaves the fates of a big bunch of beloved characters in question. Octavia, Indra, Abby, Jaha,  Kane, and Nathan are all locked down there, along with hundreds of other citizens of warring tribes. The last thing we saw inside the bunker before the death wave hit was Octavia embracing her new role as leader, and it's a moment of incredible payoff long-seeded in her character.

Octavia, the girl under the floor, who can't identify with any tribe, has now become the leader of a new clan of people, and maybe she's the only one who could have done it (as Bellamy said). Octavia rightfully won the conclave, demonstrating her prowess and strength as a warrior, but more importantly, she wielded her victory for the true greater good, looking past tribalism in favor of the best path for the human race. So what society has she built in the last six years, especially considering the turbulent circumstances under which their underground compound was forged? Will everybody we said goodbye to in the finale still be alive when the doors open? We know Isaiah Washington is departing the show, so things aren't looking good for Jaha, but what about the rest of the team?

Finally, why haven't they come out of the bunker yet? Clarke said there was too much rubble for her to clear, but certainly with 1200 people down there, they could devise a way to get out. Of course, the Mountain Men discovered that they couldn't leave their bunker because they were unable to handle the new amounts of radiation above ground, but they were locked away for decades, not just six years. All the same, could their ability to survive on the ground be affected? And could Clarke's blood hold the solution?

Speaking with EW, series creator Jason Rothernberg teased a major game-changer when we finally catch up with Octavia next season, "When we see Octavia at the beginning of Season 5, it’s a pretty big “WTF” moment, and we’re going to want to know how she got there, so ultimately we will flash back and tell some story in the bunker and likewise on the ring."

Who's "Madi"?

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Image via The CW

Good news! Clarke did not spend all six years alone. At least some of that time was spent with a young fellow Nightblood with a named Madi. Who dis? Well, she's a new character and other than the fact that she's a Nightblood, the series didn't give us much to read into about her. Fortunately, Rothenberg did the post-finale press rounds to offer some insight. One thing's for sure. Madi is a major character looking ahead to Season 5, and though she's clearly not Clarke's biological child, they have a very intense parent-child bond. So much so that Rothenberg says her relationship may come into conflict with some of Clarke's oldest friendships.

"Clarke will now have spent six years alone with this child who is her daughter, who she loves as much as a mother loves a daughter," Rothenberg told E Online, "What happens if her daughter's well-being in some way contradicts what Bellamy and/or Octavia need—which is a really ambiguous way of describing things—but where will Clarke fall if a choice that is right for her child is not the choice that's right for her people? So we'll see Clarke being forced to make the kinds of decisions unlike we've seen her have to make before."

And don't expect to see a bunch of other Nightbloods hiding out there, according to the showrunner, "These two people are the only two people on planet Earth. They are each other's everything and they've survived together."

While we're at it, will Madi be the only new addition to The 100 family? Six years and seven days is a long time to spend locked up together, underground or in space. Rather enough time to get to breeding. Now, naturally, there's going to be limited on that kind of thing, just like we saw in the Ark in Season 1, resources are a factor. But I'll be curious to see if Clarke isn't the only one who has a new pint-sized friend by the time we catch up with the rest of the gang. Especially up on the Ark, where we've got the show's two most lovey-dovey couples: Harper and Monty and Murphy and Emori, and both couples have proved their relationships are the real deal.

So Who's In that Space Ship?

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Image via The 100

By far the biggest WTF moment of the finale -- and that includes a six-year, seven-day time jump and a mystery child -- is the moment when a ship soars into Earth's atmosphere only for Clarke to realize it's not her people, but an entirely different craft altogether [Editor's Note: Not Penny's Boat!] Moments like this are where The 100 has always thrived as some of the best genre storytelling on TV, when it completely flips the script and challenges the rules of the narrative world. Before now, we had met three peoples of the surviving human race: Arkers, Grounders, and Mountain Men, and now a fourth one just entered the equation.

So who are these mystery space travelers? Well, the finale doesn't give us much, but it does offer a couple teensy-tiny clues, which appear in blink-and-you'll-miss-it moments when Clarke scans the ship with her rifle. The first bit of text tells us that this vehicle is property of the Eligius corporation. If that sounds familiar, you have been paying very close attention. The Eligius Corporation was mentioned in "The Tinder Box" earlier this season, but, it was a muted conversation between Abby and Jackson during Raven's first hallucination.

Here's the gist: Becca first created Nightblood for Eligius Mining Company to use on criminals during long-duration space travel. The criminals were put into hypersleep and given Nightblood to prevent against solar radiation. And that's the second bit of key text we see through Clarke's scope: "Garagin Prison Transport." And if you look back to "Echoes," the first episode of the season, you'll spy a very interesting headline on Raven's monitor reading "Contact Lost With Asteroid Mining Penal Colony."

So basically we can expect to see some criminals, who also happen to be OG Nighbloods, coming back to earth next season. So far as I can tell, Garagin is a reference to Yuri Garagin, the first human in space. One last bit of clever reference? Eligius is the saint of goldsmiths and metalworkers. What I'm very interested to see is what kind of society the prison colony morphed into after the end of the world and if their strain of Nightblood (engineered for space, not for Earth) has different effects.

And of course, this is a nice touch that brings the story full circle... except this time it's not a ship full of juvenile deliquents, but full-on criminals that are touching down on Earth. Rothenberg describes the landing a huge moment "that's essentially teeing up the story for the next season."

"We will definitely tell their story. Some of them will probably be angry. All of them will be home, alive and back on Earth. I think, in some really cool ways, it’s a rebooting of the entire story," he told TVLine, "The 100 were prisoners when they came to the ground, and they thought they were alone, but they weren’t. There were Grounders in this world, which we learned when a spear came out of the woods and impaled Jasper’s chest. Now Clarke is the Grounder, and these prisoners are the 100. We screw with people’s perspectives. Of course, the prisoners are going to start as antagonists, but we’ll probably dimensionalize them as we do with all of our bad guys."

What's the Fallout from Kane's Decision?

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Image via The CW

Oh, Kabby, we all want so much for you two but The 100 gods are fickle bitches. Before Kane gased Skaikru and ensured the survival of the human race, Abby made one thing very clear: She didn't want to be one of the people chosen to live inside the bunker. "I need to be outside," she told Kane, hoping to atone for her sins in Raven's test lab (and probably a few sins before that.) But Kane made the call we all knew he was going to make and made sure Abby was picked as one of the chosen. So, I'm thinking she's probably going to be pretty pissed off when she wakes up.

This is genuinely the first time Kane and Abby could have settled into some normalcy, so for their sake, I'm hoping she's willing to let this one go. And honestly, as the resident doctor, the idea that she would ever not be chosen as a survivor is just idiotic and selfish. Her skills are too valuable. We'll see how The 100 chooses to parse out the 6+ years we didn't get to see between Praimfaya and the time jump, but that's a long time for fences to be mended... or for grudges to be brewing. It will be interesting to see which one Abby chose when the bunker doors open.

We do know that we'll get to see some of what happened in there, at least. "Flashbacks are a part of our creative toolbox," Rothenberg says. "We've done it, obviously, a handful of times, and so you can pretty much count on us doing it again a lot of which is because yeah, this is a time jump, but we didn't jump past six boring years. We jumped past six pretty f--king awesome years, so definitely I'll want to show some of those things rather than just talk about it. It'll help, I think, people understand how people have changed by seeing those events as opposed to just hearing about them."

Where Are Bellamy, Raven & Co.?

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Image via The 100

It's been safe for Skaikru 2.0 to touchdown on Earth for over a year now, so why haven't they? Well, there's just too many possibilities to count. As we learned when Raven listed off all the "hard parts" of her plan, there were myriad things that could have gone wrong with their last minute survival strategy. However, we saw them make it aboard safely and I'm doubting the show is going to kill off half of their main cast during a time jump.

Most likely, it comes down to what Raven said in "The Chosen" they went up without having enough fuel to get down. Harper brushed it off saying, "sounds like a five-year problem to me" but it's possible that even with five years they weren't able to find a solution that would allow them to touch down back on earth.

As I mentioned above, six years is a long time to change things, to start families, to build a structure. When we do finally make contact with the folks up in space, there's no telling who they will be. After all, Bellamy has deep roots with both Raven and Echo, so it's certainly possible the de facto leader could finally find love.

However, there's also the possibility that the team up on the ring won't be so isolated as we think. If Eligius is floating around in space, there's always the possibility that they could have made contact with the Ringkru before touching down on Earth. It's even possible they could be working together.

We're going to have to wait to get a lot of these answers, but that's part of what makes a good cliffhanger so delicious. What are questions keeping you up at night after that finale? What do you want to see answered in the Season 5 premiere? Sound off in the comments.

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Image via The CW