Shin-chan leaves the house because he gets angry on Misae. But he returns home to eat the cakes brought by Misae. The school organizes a swimming competition. Masao gets scared to swim. But due to the fear in his mind, he swims at a good speed and wins the race. Hiroshi, Misae, and Shin-chan go to a video game parlour. While Hiroshi and Misae lose all their money, Shin-chan wins the game.