A widowed field mouse must move her family -- including an ailing son -- to escape a farmer's plow. Aided by a crow and a pack of superintelligent, escaped lab rats, the brave mother struggles to transplant her home to firmer ground.

Doc, who has just moved to Cannery Row, realizes that the only entertainment is the brothel. There he meets the spunky Suzy and they fall in love, giving them both a renewed chance at life.