改編自暢銷兒童繪本系列《我爸爸的工作是大壞蛋》及《我的爸爸是壞蛋冠軍》

曾經在擂台上大放異彩的王牌摔角選手大村孝志（棚橋弘至 飾），因負傷而消聲匿跡。一直衷情摔角運動的他，選擇戴上壞蛋面具，以「蟑螂假面」身份重出江湖。面對兒子祥太（寺田心 飾）追問起自己的職業，孝志對於自己「蟑螂假面」的稱號實在難以啟齒，而祥太卻在此時意外發現爸爸竟然是摔角擂台上無惡不作的壞蛋！此時，孝志的膝傷再度復發，醫生告誡他萬萬不能使出「必殺技」，但是大村已經下定決心用他的人生毅力教會祥太──勝利不是最重要的事……。

Takashi Omura (Hiroshi Tanahashi) was once a popular professional wrestler, but he isn't popular anymore. He now wears a cockroach mask and wrestles as a villain. He is married to Shiori (Yoshino Kimura) and they have an elementary school aged son named Shota (Kokoro Terada). Takashi and Shiori have not yet told their son what Takashi does for a living. One day, Shota finds out that Takashi is a professional wrestler and a villain with a cockroach mask. Shota is shocked and tells a lie to his classmate that his dad is a popular professional wrestler.