Henry Bigg goes on vacation and finds mouse-like creatures in his suitcase called Littles. There's a whole family of Littles. William and Lucy Little help raise their three children, 21-year-old Dinky, 13-year-old Tom and 10-year-old Lucy. Dinky is the clumsy and goofy voiced pilot who is out of school and is 21 years old and is usually seen helping Grandpa Little out by doing a bunch of stuff.