Buffalo Bert is an unusual grandad - people tell him to act his age and have a snowy beard and spend his time snoozing in an armchair, but he'd much rather wear cowboy gear and sing fantastic songs, accompanied by his guitar. It isn't a problem until his grandchld, Sunny, starts at a new school and meets a new crowd of friends. Suddenly, Bert becomes a huge embarrassment. Can Sunny stay loyal to Buffalo Bert and still fit in with the gang?