High school student Hara Keisuke suddenly finds himself wearing a pantyhose while putting on his jersey. This happens because his sister was wearing his jersey the day before, but Keisuke doesn't find the right timing to laugh it off. The one who helps him in this situation is his good-looking best friend Shinoda. Performing perfectly in tune, they manage to leave the classroom unnoticed, but when Shinoda watches Keisuke take off the pantyhose he becomes aroused…?