タカシの母・春江がくじ引きでＰＴＡの新しい広報委員に選ばれてしまった。あまりの忙しさに最初は苦しんでいた春江だったが、あるときから急に楽しそうな様子を見せるようになる。怪しく感じたタカシが春江を尾行してみると、その謎が判明した。春江は「ＰＴＡカンパニー」という会社に自分の「替え玉」を頼んでいたのだ。
Takashi's mother, Harue, has been chosen by a lottery to be the new publicity committee member of the PTA. At first, Harue struggles with being too busy, but at some point she suddenly starts to show signs of enjoyment. Takashi became suspicious and followed Harue, and discovered the mystery behind her behavior. Harue had asked a company called "PTA Company" to be her "double".
