When Eva (Thora Birch) secretly adopts a mischievous capuchin monkey, her life turns upside down in this slapstick family comedy. Eva's mother (Mimi Rogers) and allergic stepfather (Christopher McDonald) raise objections, especially when the animal begins stealing everything in sight, but Eva is concerned about protecting her new pet from Azro (Harvey Keitel), who wants to find him and use him as part of an important robbery.