Yuuka and her boyfriend Norikazu have been in a committed relationship for over a year, even though they are physically apart due to his job as a newspaper writer in another city. When Norikazu gets a chance to interview his high school friend and the lead singer of Japan's top band, Zero Sum Game, named Keito, Yuuka joins them as a fan. However, a distressing incident occurs where Yuuka is assaulted by the band members while Keito keeps Norikazu occupied, revealing Keito's unsettling fixation on him. This harrowing event profoundly alters the dynamics between the trio, leading to a complex and intricate web of emotions and conflicts.