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Manhattan broker Michael Cromwell (Tim Allen) is engaged to fiancée Charlotte (Lolita Davidovich) but needs a divorce from his estranged wife, Patricia (JoBeth Williams), who's been living in the Amazon with a native tribe for years. Michael travels to the Amazon and discovers he has a son: Teen Mimi-Siku (Sam Huntington), who begs to be taken to the city to fulfill a quest for his tribe. At first, things don't go so smoothly for the kid from the jungle, but soon the boy and his dad bond. Wikipedia