Aya is attacked by someone who has invaded the girls' dormitory. The monkeys rush to the girls' dormitory and help Aya, but after her criminal has already escaped. Aya's underwear was stolen from her room. Around that time, Yamada and Ritsuko, who are watching the monitor, notice a man searching for Matsunaga's desk. The man I caught was Kimura, an art teacher. Kimura seemed to be happy to touch Matsunaga's personal belongings, and he was not the culprit who stole Aya's personal belongings. However, Aya is attacked by someone again, and she is confined in the basement this time.
あやが女子寮に侵入した何者かに襲われる。サルらは女子寮に駆けつけ、あやを助けるが犯人は既に逃走した後。部屋からはあやの下着が盗まれていた。その頃、モニターを監視中の山田とリツコは松永の机を探る男の姿に気付く。捕まえた男は美術教師の木村だった。木村は好意を抱く松永の私物を触って喜んでいたらしく、あやの私物を盗んだ犯人ではなかった。しかし、あやはまたしても何者かに襲われ、今度は地下室に監禁されてしまうが…。
