The Littles

A 13-year-old boy named Henry Bigg, who is going on vacation, finds some mouse-like creatures called diminutives in his suitcase.

The Littles is a 1983 adventure animation movie, starring Robert David Hall, Bettina Bush, Jimmy Keegan. It holds an IMDb rating of 6.5/10 from 1,239 votes and runs 30m.