Tommy does not like his new baby brother. Encouraged by Phil and Lil's dislike of newborns, they decide to return him to the hospital. But they get lost along the way and get into trouble.
Chucky tries in every way to stop his father from marrying an evil businesswoman with the help of his friends in an unforgettable adventure.
When the Rugrats and their family are stranded on an island, they seek help from the Thornberrys, a family that makes nature documentaries.