Tsukigumo becomes a teacher and goes on an overnight learning trip with her students for the first time. Before she goes to bed, when she returns from her bath, for some reason, the nerdy physics teacher Uemura is in her room. She can no longer run away from Uemura, who has always seen Tsukigumo as a woman. Tsukigumo resists, but she ends up having sex with him without her consent. However, although she was reluctant to do this, she gradually came to orgasm due to Uemura's big dick and exquisite piston.