Chinami, the only woman in her college track club, attends a training camp and is approached by a male member who claims he wants to massage her. She rejects his wandering hands but is pressured into unprotected penetration. Though she knows it is wrong, the pleasure overwhelms her; before long, she willingly sucks the men's cocks and ends the five-way orgy with her tanned athletic body covered in cum, reduced to the club's shared sex toy.