A beautiful masochistic teacher sees through her slave tendencies and invites her naturally masochistic idol-type student into the abyss of abuse!!! "Mai can't stop fantasizing about sex and can't concentrate on her studies. Worried about this, her teacher Shiokawa calls out to her. Mai tells Shiokawa that she is dominated by fantasies of being raped by a man, and Shiokawa invites her to a secret club. It's a secret school club, the Sex Spring Club, where sadists and masochists gather and have sex. Mai is pleased with her first training play, and Shiokawa doesn't seem satisfied with her state. The chemistry between the two masochists is incredibly good, and the synergistic effect accelerates the masochistic play!!"