When Gonzo embarks on a quest to find his real family, he discovers that his long-lost relatives are actually aliens from a distant planet. After announcing to the world on Miss Piggy's talk show, "UFO Mania," that he plans to find his family and prove once and for all that life on other planets exists, he becomes the target of paranoid government operative K. Edgar Singer. After a daring escape from the Singer compound, Gonzo tracks down his mothership and faces the most difficult question of his life: does he climb aboard and join the family he has always wanted or does he stay on Earth with the family and friends that he has always known and loved?