When Hiroshi and Shin-chan go boating, Hiroshi falls asleep and Shin-chan rows the boat to reach the land and meet his mother. As Shin-chan feels hungry, he orders Masao to complete his work. Misae gets angry, and unknowingly, beats Masao instead of Shin-chan. Hiroshi and his family visit a restaurant without money. So, they take up a dare of eating a meal in 30 minutes and do not pay a penny.