Sanada plays a salariman who just lost his job. Yonekura, his wife, is a dancer who gave up her career when they got married. In the middle of family crisis, Yonekura leaves to pursue her dream. Sanada is stuck with their only son. Suzuki, his old flame -turn jet set career woman- is forced to take care of them. Will the romance spark again, now that Sanada already has family, and Suzuki has a younger man, Makoto, beside her?

In the aftermath of the most devastating conflict mankind had ever experienced, the tiny island of Shikotan became part of the Sakhalin Oblast... and on the unhealed border in this remote corner of the world, friendship among children from two different countries timidly blossomed, striving to overcome language barriers and the waves of history. Inspired by true events.