Hana and Yusuke, a couple living in Tokyo, have been distant in their relationship after an incident three years ago, and spend more and more time alone. Unable to close the gap between them, the two are in a karaoke room unable to make up their minds regarding the divorce papers laid out in front of them. While Hana sings in desperation, Tokyo suffers a blackout due to a power shortage. At the same time, Hana suddenly collapses...

Swedish student Mark finds himself disillusioned by the conformity around him in Japan. But his life changes when he crosses paths with Yuuka, who works at a quaint izakaya in Akasaka, Tokyo, and who poses him a question about happiness, triggering an unconventional challenge between the two.