First segment was brilliant: Billy spends the day with Grim, in order to learn how to become a reaper (that's what he wants to be when he grows up). He meets a young girl, named Blandy (who looks just like him) and falls in love with her. However, Blandy doesn't care for Billy; all she wants is Grim, and Grim is disgusted by being with her. Billy however doesn't notice this and blames Grim for trying to steal his girlfriend. Mandy is shocked to learn that Billy has fallen in love with a girl, and Billy's dad tells him that if this girl is human, he won the bet he made with his mom. Blandy gives Billy her number, 5, and her left sock to remember her by. Billy keeps sucking on her sock until Grim tells him that's not really Blandy's sock.
Billy is supposed to meet Blandy at the mall, and asks Grim to take him there. Meanwhile, Mandy sees a picture of Blandy in the "Monster Manual" Billy's dad took from Grim's belongings and which he finds amusing looking at the pictures.
At the mall, Billy is fighting with Grim, until Mandy comes and shows Billy what Blandy really is: a doppleganger, which came here only to make everyone's lives miserable. She then forces Blandy to leave our dimension.
Billy still has feelings for Blandy and promises he will someday find her and marry her. That day finally comes, sometime in the future, but Blandy believes she is marrying Grim. So Billy starts fighting with Grim again.
The second segment was ok, but nothing special. An elder athlete, Mighty Moe believes he can live forever by exercising and eating health food. If humans can live forever, then Grim's job will become useless. So he and Mandy try to make Mighty Moe eat a cheese puff, the most unhealthiness thing someone could eat.
The episode is nothing worth re-watching (at least for me), maybe except Grim's line: "Hey, where are eenie and meanie Mighty Moe?". Pretty good line, but not enough to make me watch this second segment again. The first one is enough for me.