GASP, an emerging band, faces challenges as they prepare for their debut concert at Yaon Hibiya auditorium on August 26, 1987. Lead vocalist To-Y, who often performs at Shinjuku Loft, is attacked by Aikawa Yoji, a rival musician with a large fan base. Aikawa's manager, Ms. Kato, tries to persuade To-Y to leave GASP and sign with Koyama Productions, which could lead to a more lucrative solo career. Meanwhile, the band's unconventional style and behavior set them apart from mainstream expectations.