Thriller about an unsuccessful lawyer who gets involved in a murder case and is somehow fingered as genius swindler Big Mouse.
Cast:Lee Jong-Suk , Im Yoon-ah , Kim Joo-hun , Yang Kyung-won , Ja-Yeon Ok , Lee Ki-young , Kim Jung-hyun , Lee Yoo-Joon , Oh Ryoong , Oh Eui-Sik , Victoria Grace , Ren Hanami , John Choi , Jae-Sung Jung , Kyung-Chul Song , Kwak Dong-yeon , Jang Hyuk-jin , Lee Jung-hoon
Chang-ho, who has no money and is about to lose his wife, receives a call from the mayor of Gucheon.
Chang-ho is charged with drug abuse and locked up in Gucheon Prison. But wait, is Chang-ho the Big Mouse?
Who made Chang-ho, Big Mouse, and why? However, he needs to be recognized as such to protect Mi-ho.
Is Chang-ho really Big Mouse? Gong Ji-hoon makes a bet with Chang-ho to find out his true identity.
Ji-hoon approaches Mi-ho to find Seo Jae-young's thesis. Does Mi-ho know Chang-ho's true identity?
Has Chang-ho been lying to Mi-ho? Mi-ho joins the prison medical volunteer program to meet Chang-ho.
Jae-ho warns Chang-ho to stop looking into Seo Jae-young's thesis. Mi-ho is suddenly attacked.
Chang-ho is in a mental hospital. Will Chang-ho be able to hide his identity in a state of confusion?
Chang-ho stands as an informant in Seo Jae-young's trial, and Ji-hoon and Jung-rak search for Chang-ho.
Chang-ho calls out Big Mouse, and they respond. An unexpected character turns up at the agreed time.
Chang-ho shifts the power dynamics in the prison to pressure Big Mouse. Do-ha plants a new warden.
The warden plans to use the prison riots to take out Chang-ho and Mi-ho.
The hot-plate restaurant is in ruins. The agitated Chang-ho meets someone unexpected there.
Chang-ho makes a tempting offer to Chairman Kang. Do-ha conspires with Yoongab to get rid of Chang H-ho.
Chang-ho prepares for the full-fledged elections against Do-ha but Mi-ho's health is in trouble.
The TV debate begins and the smoking gun that will bring down Choi Do-ha is at Mi-ho's fingers.