The first trailer for director Lawrence Kasdan’s (The Big Chill) latest feature Darling Companion has gone online. The story centers on a woman (Diane Keaton) who saves an abandoned dog on the side of the highway. She brings the dog back to her home, where her husband (Kevin Kline) proceeds to lose it. The two round up a few remaining guests staying at their home and set out on a search. This is one of the strangest and most perplexing trailers I’ve come across in quite some time. The tone is all over the place, and I can’t pin down what the story is really about. Is it more in the vein of Marley and Me, Something’s Gotta Give, or Homeward Bound? I genuinely don’t know. The cast is fantastic, which gives me hope, but I’m a bit baffled by this trailer.

Hit the jump to check it out for yourself. The film also stars Mark Duplass, Richard Jenkins, Elizabeth Moss, Dianne Wiest, and Sam Shepard. Darling Companion opens in limited release April 20th.

Click over to Yahoo! to watch in HD.

Here’s the synopsis for Darling Companion:

On a wintry day, Beth (Keaton) saves a bedraggled lost dog from the side of the freeway. Struggling with her distracted, self-involved husband Joseph (Kline) and an empty nest at home, Beth forms a special bond with the rescued animal. When Joseph loses the dog after a wedding at their vacation home in the Rockies, the distraught Beth enlists the help of the few remaining guests and a mysterious young woman in a frantic search. Each member of the search party is affected by the adventure, which takes them in unexpected directions – comic, harrowing, and sometimes deeply emotional.