Jeong Jae-heon

An undercover cop has his loyalties tested when the boss of the corporate gang he's spent years infiltrating dies.

Jang-soo is a judo instructor who is indifferent to everyone but his daughter. One day he realizes he can see Tae-jin, a ghost who used to be a devoted police officer. Tae-jin asks Jang-soo to help solve the case that took his life away from him.

Based on true events, renowned mountaineer Um Hong-gil sets out on a mission to Everest to retrieve his late junior climber's body and faces the greatest challenge of his life.