Today is Children’s Day. Maruko and Tama-chan go out to buy kashiwa mochi, and run into Maruo-kun, who invites them to his house. While there, Maruko fiddles with a samurai helmet display and ends up breaking it. She confesses everything to her parents, and then heads back with her mother to apologize…
今日は子供の日。まる子とたまちゃんは、柏餅を買いに出かけた。そこで丸尾クンに出会い、家に招待された。丸尾クンちに飾ってあったカブトをいじって壊してしまったまる子は、両親に打ち明ける。お母さんと謝りに行ったまる子は…。