From his seat on a commuter train, a respected but downtrodden Tokyo office worker spies a beautiful woman in the window of a dance studio. Mesmerized, he signs up for ballroom dance instruction at the school, despite the threat of losing face by participating in such an "undignified" public spectable. However, he soon discovers that he has a natural aptitude--and a natural love--for dancing, much to the dismay of his perplexed wife and daughter.