Another translation is: Another me in the world. Nana Komatsu (Aoi Miyazaki) is going to meet her boyfriend. On the train to Tokyo, she meets another Nana - Nana Ozaki (Mika Nakashima). Nana hopes to go to Tokyo to reunite with the BlackStone band. The two Nanas hit it off at first sight. When they arrived in Tokyo, they met again and moved into the rental house 707 together. Although they have the same name, they have very different personalities. During their cohabitation, they both suffered emotional trauma. They got to know each other better through support, and their feelings became deeper and deeper. They encouraged each other to find their own ideals along the way.