Detective Baek Joong-sik is on the brink of losing all of his assets when he stumbles upon a bag containing one billion won while investigating a mysterious body mutilation case; little does he know, he has stepped into the heart of a major incident.

After being released from prison, Kim Gukho's taste of freedom is short-lived; he soon learns that he is the main target of a public murder game with a 20 billion won bounty.

Attorney Lee Sangbong realises that he is stuck in the bottom 1% of lawyers in the country; as his ambitious business project starts to fail, Lee receives a life-changing proposal from a politician.

Mayor Ahn Myeongja is investigated by the prosecution for corruption; she faces the biggest crisis of her political career; abandoned by her party leader, she seeks to use Kim Gukho to create an opportunity for a comeback.

Violinist Seo Dong-ha, set to study in Vienna, faces hatred and contempt as Kim Guk-ho's son.

Mr. Smile comes to Korea to assassinate Kim Gukho but faces an unexpected situation.