Schoolgirl Ami declares, "I've caught a teacher for our teaching practicum, so let's all give him an electric massage," marking the beginning of a domination session. Finding it amusing, Teacher Mika joins in as the three girls pin the teacher down. With no chance to escape, the teacher is subjected to electric massage by the fourth participant, Mika. Gyaru-type Ami eagerly starts the electric torture, followed by tall Mahiro delivering her shocks. Third is Maya, the buxom girl, unleashing intense electric waves, and finally Teacher Mika. The teacher climaxes helplessly in front of his students, but it's far from over—enduring repeated orgasms from simultaneous electric massages by all four, the session of domination continues relentlessly.