A burglar broke into Senkichi's house. Fortunately, Chikichi was not injured, but Mr. Ochiai takes this incident as a lesson and tells the students, "When in danger, run away first." The following Sunday, Takeo's father left for Shinshu. Since his father will be away for about a month, Takeo decides to protect his mother in his place. However, Takeo's feelings were a little too strong...