A marathon is coming up at Nagi's school, and Maria and Hayate want her to participate too. Nagi makes a bet with Klaus, where if she can get in first place in one of the races, then that would prove Hayate's worth as a butler, but if she cannot, then Hayate will be fired. Hayate trains with Nagi the next two days, and the day of the race the two get off on a slow start. Before long, Hayate must carry Nagi throughout most of the race, and faces a few enemies along the way impeding their progress. After running into Hinagiku, Nagi goes on ahead, but just as she is about to win, Hinagiku's older sister Yukiji beats her to the goal, winning the 150 million yen prize.