Malcolm finds himself being antagonized by a new bully, Kevin. This kid was always mocking him, teasing him, at lunch he cut right in front of him. On pizza day! But after Kevin taunted him about it one time too many, Malcolm loses it and attacks the kid, but deeply regrets it after learning his bully was 7-years-old; Hal cuts down the huge tree in the front yard, and he and the boys have just a little too much fun with the wood chipper.