His gaze is set on women who seem vulnerable on the train platform. Faithful to his desire to touch a woman's exposed skin in the summer, he touches her breasts and buttocks with vulgar hands. Before he knows it, he has surrounded the woman with a wall of people on the train, isolating her from the other passengers, and then he repeats his bold crimes as his desires take over... The women are frightened by the sudden incident and are unable to call for help as they are raped by the men.