The boys buy mama a new hat for Mother's Day, but on the way home, fall in the mud and ruin it. They swap the bad hat with one that a nearby horse is wearing and head home, with the horse in pursuit. Mama loves her new hat, and sets out to show her friends, but encounters the horse, who goes after the hat. The horse chases her home, where the kids divert it into a room and try on several different hats.