One day, Hiura Mizuki, the former manager of the American football club members in university days, suddenly shows up in front of ace quarterback Nishiwaki Tetsuro and his buddies who are on their way back from a reunion of American football club members. She makes a shocking confession to them, "I killed a person." Mizuki also confesses to having gender identity disorder and now lives as a man. Nishiwaki and his buddies feel disturbed but scramble to protect their brilliant youth and friend. How did the incident happen? As they try to get to the truth, distressing facts are gradually revealed. What decision will Mizuki and the team members reach?