He spends his days working and then hanging out with co-workers and coming home to his wife and daughter. It has reached a point in his life where the same routine is starting to make him feel depressed. One night on the subway, he sees a woman in the window. The following night, he decides to go to the dance studio where he learns the woman, Mai Kishikawa, is the lead instructor. He begins to take dance lessons and while he is infatuated with Mai, his teacher is the more mature Tamako Tamura.