A man calls home one day. His wife doesn't answer the phone and his suspicions grow.

After a high-ranking North Korean official requests asylum, KCIA Foreign Unit chief Park Pyong-ho and Domestic Unit chief Kim Jung-do are tasked with uncovering a North Korean spy, known as Donglim, who is deeply embedded within their agency. When the spy begins leaking top secret intel that could jeopardize national security, the two units are each assigned to investigate each other.

An Jung-geun fights for Korea's independence from the Japanese Empire and sparks a movement. In 1909, he assassinates Itō Hirobumi, the first prime minister of Japan and resident-general of Korea.

In 1909, several years after Korea is forced into becoming a Japanese colony, freedom fighters plot the daring assassination of Japan's prime minister during their quest for independence.

Soon-tae, aspiring to start his dream restaurant franchise, is nominated as the next boss of the gang. He hopes to pass the role to Kang-pyo, the grandson of the former boss, but Kang-pyo dreams of becoming a tango dancer instead. A fierce competition between two strong candidates begins with the goal of losing the election to pursue their individual dreams! To add chaos to the mix, troublemaker Pan-ho, who is unwanted by everyone, decides to join the boss election!

A disgruntled henchman teams up with an ambitious prosecutor to bring down a leading presidential candidate and the news editor behind him who is truly pulling the strings.

Amid a coup, a North Korean agent escapes south with the country's injured leader in an attempt to keep him alive and prevent a Korean war.

Jang Tae-Young is a popular trouble shooter in the criminal world. He is cold and ambitious. He dreams of building a casino hotel one day. A reporter then goes to Jang Tae-Young.

The secret society of contract killers falls into chaos, unleashing a new breed of assassins. With old rules in ruins, who dares claim the shadows?

A group of professional con artists scam poor, unsuspecting citizens with fraudulent bank loans. The scams go well for a while, but then they begin to distrust each other.