Because of the brutal killing of his family, making the young engineer take revenge without waiting for the justice system. But due to carelessness, he is arrested for murdering the father of a woman he secretly loves and is sent to train as an assassin of a secret organization that eliminates evil people illegally. There was a turn of event when he realized he was being used so he decided to withdraw and expose the organization's evil plans. With his own life and his loved one at stake.