The Percy Jackson sequel just got a whole lot more geek friendly. Castle star and all-around great guy Nathan Fillion is set to join Percy Jackson & The Olympians: The Sea of Monsters as a god. THR reports that Fillion will play Hermes (that fast one with wings on his shoes), the father of the antagonist of the series, Luke. The character of Hermes was played by Dylan Neal in the first film, but apparently producers felt like they needed some Fillion in the sequel (a respectable request). Luke—the agreed-upon name for all evil youngsters—is played by Jake Abel, opposite star Logan Lerman who is returning as the demigod Percy. Also reprising their roles from The Lightning Thief are Alexandra Daddario and Brandon T. Jackson. Director Chris Columbus is taking a producer credit on the follow-up, with Thor Freudenthal (The Diary of a Wimpy Kid).

The plot of Sea of Monsters finds Percy and his demigod friends heading to the Island of the Cyclops (the Bermuda Triangle) in order to retrieve a Golden Fleece. Hit the jump to read a synopsis of the book. Percy Jackson & The Olympians: The Sea of Monsters opens March 27th, 2013.

percy-jackson-the-olympians-sea-of-monsters-book-cover

Here’s the synopsis for Percy Jackson & The Olympians: The Sea of Monsters:

After a summer spent trying to prevent a catastrophic war among the Greek gods, Percy Jackson finds his seventh-grade school year unnervingly quiet. His biggest problem is dealing with his new friend, Tyson—a six-foot-three, mentally challenged homeless kid who follows Percy everywhere, making it hard for Percy to have any “normal” friends.

But things don’t stay quiet for long. Percy soon discovers there is trouble at Camp Half-Blood: the magical borders which protect Half-Blood Hill have been poisoned by a mysterious enemy, and the only safe haven for demigods is on the verge of being overrun by mythological monsters. To save the camp, Percy needs the help of his best friend, Grover, who has been taken prisoner by the Cyclops Polyphemus on an island somewhere in the Sea of Monsters, the dangerous waters Greek heroes have sailed for millennia—only today, the Sea of Monsters goes by a new name…the Bermuda Triangle.

Now Percy and his friends—Grover, Annabeth, and Tyson—must retrieve the Golden Fleece from the Island of the Cyclopes by the end of the summer or Camp Half-Blood will be destroyed. But first, Percy will learn a stunning new secret about his family—one that makes him question whether being claimed as Poseidon’s son is an honor or simply a cruel joke. [Amazon]