‎友久和远藤既不那么英俊，也不是那么丑陋。他们只是普通的男生。他们看着高年级学生瑞穗和他们的同学三仓。瑞穗是一名海归学生，她的美丽吸引了所有学生。瑞穗注意到了他们的眼睛，她给了智久一个暗示的眼神。‎ ‎有一天，智久在办公桌上发现了一张纸条。上面写着，“我在三楼的女士房里等着”。他去了那里，发现瑞穗在等他......‎ ‎第二天，智久忍不住回忆起了前一天发生的事。他碰巧发现远藤不见了，而他暗恋的三仓也失踪了。他害怕他们在做事。然而，确切地说，他们正在火灾逃生道上做事。‎

Tomohisa and Endou aren't either so handsome or ugly; they are just normal boy students. They're looking at Mizuho, the senior student, and Mikura, their classmate. Mizuho is a returnee student, and she attracts all the students by her beauty. Mizuho notices their eyes, and she gives Tomohisa a suggestive look.

One day, Tomohisa finds a note in his desk. It says, "I'm waiting in the ladies' room on the third floor". He goes there and finds Mizuho is waiting for him...

The next day, Tomohisa can't help recalling the event the day before. He happens to find that Endou is gone, and also Mikura, whom he loves secretly, is missing, too. He's afraid that they're doing things. However, exactly, they're doing things on the fire escape.