A chance meeting on a train to Tokyo sends two girls named Nana on a collision course with destiny! Nana "Hachi" Komatsu hopes that moving to Tokyo will help her make a clean start and leave her capricious love life behind her. Nana Osaki, who arrives in the city at the same time, has plans to score big in the world of rock'n'roll. Although these two young women come from different backgrounds, they quickly become best friends in a whirlwind world of sex, music, fashion, gossip and all-night parties! With the tabloids still out for blood, Nana and her Blast bandmates move into a weird dorm building run by their agency.

But they've barely got enough time to settle into their new digs because their crammed schedule has them running from music studio to TV interview. The stress of band life and dealing with a disintegrating Ren have started to take their toll on Nana. If she collapses now, will she ever get back up?