A teenage boy wakes up buried in snow with a bullet wound in his shoulder and no memory of who he is or what happened to him. He soon discovers he's been trained to kill, then sets off to find out who he is and where he belongs. The people from his old life want him dead. Fighting to survive, he joins the Underground - a secret criminal community - where he has to earn his place. A dangerous mission leads to clues about his past and the organisation he worked for - who now seek to destroy his new home. Can he break free of them once and for all and save the Underground?