保育園で子供たちに啓発活動を行っていた十和たち第二小隊に出動命令が下る。近隣でクリスマスイベント用にレンタルされた雪だるまレイバーが何者かに奪われたのだ。犯人の意図は何か。第二小隊は果たしてそれを止めることができるのか？
Towa and the Second Platoon, who were conducting awareness-raising activities for children at a nursery school, receive orders to deploy. A snowman Labor that had been rented for a nearby Christmas event has been stolen by someone. What is the culprit's intention? Can the Second Platoon stop them?
