Maddy looks like she's going to win the Seaview Junior Girls' Sailing Classic for the third time. But when she discovers that the boys' prize is more than the girls', she is determined to get equality. Maddy decides to enter as a boy called Buddy Guy but the Blockheads also have their eyes on the prize. Maddy has to walk, talk and act like a boy. But can she beat Jason and prove a point to why the boys and girls prizes should be the same?