Barney helps Abby get back at Ted by staging a fake proposal, but Abby doesn't realize that it's fake. Lily decides to sell some of her paintings so that she and Marshall can pay for floor repairs at their new place.
Ted breaks up with Stella but immediately wants to take it back after a life-changing experience. However, Stella doesn't realize that he broke up with her. Meanwhile, Barney has a serious accident on his way to see Ted in the hospital.