商店街を荒らし回る一匹のドロボーネコ。店主たちが手を焼く中、ついにトト子の実家の魚屋も被害に遭い、さすがの６つ子も黙ってはいられない。この状況にひとり何かを思う一松は……？
A thieving cat is rampaging through the shopping district. While the store owners have a hard time dealing with it, Totoko's family fish shop is also affected, and even the sextuplets can't keep quiet. What is Ichimatsu thinking about this situation?
