A Vietnam War veteran, Ki Gwang is an old bus driver. One day, he faced that his son had committed suicide and met his granddaughter at the funeral. However, he founds that some friends of his son has been using as his granddaughter as their need, This was the beginning of his vengeance for the world…

A sickly girl Ju-ran transfers to a new sanitorium boarding school to regain health. But she discovers that students are disappearing and notices abnormal changes happening to her body. She suspects the school for what's happening and tries to discover what secret is hidden.

After a traumatic event, a drug trafficker turns sides and conspires with a dangerously ambitious undercover police officer to bring down the mysterious kingpin of a major drug cartel.