Hallie Parker and Annie James are identical twins separated at a young age because of their parents' divorce. Unknowingly to their parents, the girls are sent to the same summer camp where they meet, discover the truth about themselves, and then plot with each other to switch places.

The four-inch-tall Clock family secretly share a house with the normal-sized Lender family, "borrowing" such items as thread, safety pins, batteries and scraps of food. However, their peaceful co-existence is disturbed when evil lawyer Ocious P. Potter steals the will granting title to the house, which he plans to demolish in order to build apartments. The Lenders are forced to move, and the Clocks face the risk of being exposed to the normal-sized world.

London high-society mouse, Roddy is flushed down the toilet by Sid, a common sewer rat. Hang on for a madcap adventure deep in the sewer bowels of Ratropolis, where Roddy meets the resourceful Rita, the rodent-hating Toad and his faithful thugs, Spike and Whitey.

1999 film directed by Rob Minkoff