Carrie and Doug have a disagreement, and Carrie pushes Doug, causing him to accidentally fall down the stairs, injuring his knee. Doug soon discovers that he can use his injury as leverage with Carrie to get all the things he wants in life. Arthur soon joins in to see if he can manage the same top of the line treatment for himself. When Doug's knee heals faster than expected, he has to fake being hurt a little longer in order to get out of going to Carrie's cousin's wedding. But when an opportunity comes up for him to play Slam Ball - a new form of basketball at the gym, that has a mile-long waiting list - with the guys, he gets caught in his lie.