Jo Yoon-soo

Mild-mannered Tae-jung is wrongfully imprisoned for a heinous crime. He soon discovers that a mysterious figure named Yo-han orchestrated his downfall. Fueled by vengeance, Tae-jung sets out to make Yo-han pay.

In this Korean action-drama series, when a deadly bioweapon is stolen during a secret meeting between the US and South Korea, global intelligence agencies race to prevent it from being unleashed on the world.