The Mouse and His Child
The Mouse and His Child is a 1977 animated film based on the 1967 novel of the same name by Russell Hoban. In United States, the film is also known as The Extraordinary Adventures of the Mouse and His Child.
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The mouse and his child are two parts of a single small wind-up toy, which must be wound up by means of a key in the father's back. After having been unpacked, they discover themselves in a toy shop where they befriend a toy elephant and toy seal. The child mouse proposes staying at the shop to form a family, which the other toys ridicule. After breaking due to a fall from the counter, they are thrown in the trash. Outside, they become enslaved by Manny the rat, who runs a casino in the city dump and uses broken wind-up toys as his slave labor force. With the aid of a psychic frog, the mice escape and meet various animal characters on a quest of becoming free and independent self-winding toys. They rediscover the elephant and seal, who are somewhat broken down. Together they manage to form a family and destroy the rat empire.*Wikipedia*