Airi Sato, a diligent student aiming for a prestigious school, cheats just once. When her act is discovered by a male teacher, she is subjected to his daily coercive commands. The situation reaches its peak during a school trip. Forced to wear a remote-controlled vibrator at all times during group activities, she is made to perform compulsory blowjob sessions on male students in the boys' bath. Any attempt to escape ends in swift capture, leading to forced outdoor sex. Ultimately, she is surrounded by her entire class and reduced to a sex slave. At that moment, she silently makes a firm resolution.