"One Wonderful Sunday" starts off with Masako meeting Yuzo at the train station so they can spend the day together. Both do not have much money and are living separately with friends or family. Masako seems to bask in his misery by being a bit depressing. Yuzo always seems to take situations and make them positive. They spend they day on very little money. Since they're constrained on the amount of money they decide to do things that don't cost very much money. They visit a house that's for sale, go to a place that's available for rent, and play ball with some school children. It starts to rain and the couple decides to go to a show by looking at an advertisement. Unfortunately, two men in front of them purchased all the tickets and are selling them at a higher price! Masako is upset about this, since he always feels cheated by the "black market". He picks a fight with the man that doesn't end very well. They go back to Masako's room where he's again in a depressed mood.