masako, noticing his odd behavior, thinks that he is having an affair, prompting her to hire a private detective to follow him. meanwhile, along with his classmates, sugiyama enters an amateur competition, only to find out that his wife, having finally learned the truth from the detective (who has now become a devoted fan of ballroom dancing) is in the audience. surprised by this, he stumbles and nearly knocks his dance partner to the floor. though he is able to catch her, he accidentally rips the skirt of her dress off. both leave the contest. later, they learn that tomio won the contest. when tomio is ridiculed at work after his colleagues read of his success in the newspaper, sugiyama stands up and tells them not to make fun of something they don't understand.