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! Takumi and Hachi are getting married, but it's far from a joyous announcement.

Nobu and Nana are devastated, and even Takumi's bandmates take the news hard. With paparazzi skulking around for a new scandal to exploit and tensions between Trapnest and Blast on high alert, will Hachi ever get her happily ever after?