Doubting his golfing skills after seeing his meager collection of sports trophies, Bart accepts Lisa's offer to help him practice. Lisa approaches the task as a zen master, teaching Bart to meditate. She finds the golf course is based on simple geometry and teaches Bart how to achieve a low par. Homer makes a bet with Ned about whose son is a better golfer: the father of the boy who does not win the tournament will mow the other father's lawn in his wife's Sunday dress.