Dude, Where's My Spaceship?

Klatu, a varna, crashes his spaceship into planet Earth, along with his siblings, Lek and Ploo. Stranded in the Nevada desert, Ploo is captured by Earthling army personnel who suspect her of being a threat to humanity. As Ploo faces the possibility of being imprisoned in Area 51 indefinitely, Klatu and Lek must find a way to rescue her from the clutches of the fearsome Major Paine.