Seiya and Usagi go on a romantic date. They spend the day at an amusement park and go dancing, which causes Usagi some discomfort. Sailor Iron Mouse targets Seiya, forcing him to transform into Sailor Star Fighter. Usagi, having transformed into Eternal Sailor Moon, arrives on the scene and notices the pin Seiya won as a prize on the ground. She questions the Starlights about his disappearance. Iron Mouse, having seen the transformation, threatens to reveal Seiya's identity...