Years ago, at the Daisy Hill Puppy Farm, a unique litter is born. Snoopy, Spike, Andy, Olaf, Marbles, Belle, Molly and Rover and brothers and sisters. They grow up and form a band. However, they become separated when they are sold. Years later, Charlie Brown can't help but notice how sad Snoopy has become. He suggests that Snoopy have a family reunion. The whole gang enthusiastically responds, and even when they return to their birthplace for the shindig they learn that things have changed. But, the reunion is a joyful occasion with the group performing some good music.