Park Min-sang

Kang-man is an old man living in an isolation due to his cranky personality. Alcohol and a shabby bicycle are the only two things that give him solace in his lonely life. One day, a young boy named Poong-do appears out of the blue with the news that his son died of a car accident and claims that he’s Kang-man’s grandson. Though Kang-man refuses to accept Pooong-do as his grandson, Poong-do, who seems to be as stubborn and bullheaded as Kang-man, won’t live.

A superhero drama about Soo-yeol who has lived his whole life as a materialistic police detective, but changes into a champion for justice and fights against police corruption when a hidden persona called "K" awakens inside him.