It's the beginning of baseball season, and Charlie Brown is looking forward to the new season with a mixture of joy and apprehension. The apprehension is mainly due to Lucy, who is constantly bothering him with idiotic questions, sarcastic remarks and non-sequiturs, to the point where poor Charlie literally becomes physically ill on the pitcher's mound.
After his team loses their first game to Peppermint Patty's team, Charlie Brown then thinks of a great idea of trading one of his team players to Peppermint Patty. He decides to trade Snoopy for five of Peppermint Patty's players (because Snoopy is the only player Patty would want). However, the team is angry with Charlie Brown for this, and Charlie Brown finally decides to rip up the contract made for the trade (which is just as well, as the five players Patty was going to trade declared they'd give up baseball before they'd ever play for Charlie Brown).
The team continues to play throughout the season normally until Peppermint Patty suggests that they should trade Lucy for one of Peppermint Patty's team members, which Charlie Brown does.
