That night, Charlie Brown puts on a suit, because he has to go to the ball with Peppermint Patty. He goes to feed Snoopy first, but Snoopy puts on a bowtie and goes with him. When they arrive at the party, Charlie Brown is told that Snoopy can not come in because dogs are not allowed at this party. Charlie Brown tells a lie to the host that Snoopy is really a kid who comes dressed as a dog because he thinks it was a costume party, so Snoopy is allowed.