Peppermint Patty enjoys swimming and singing songs around the campfire during her stay at summer camp, and when she learns that Charlie Brown is staying at the boys camp across the lake, she devises a plan for an even greater adventure.

Springtime means it's baseball season, and Charlie Brown wants this to be the year his team finally wins a game! Charlie Brown's only option is to make some trades to improve his team. He calls Peppermint Patty to make a deal, but she tells him there's only one player on his team she wants, "he funny-looking little kid with the big nose." Snoopy! Peppermint Patty offers Charlie Brown five good players for Snoopy. But will Charlie Brown trade his beloved...