Framed and left for dead by the ruthless prosecutor he once served, Kang-su a cunning drug informant finds himself crippled and locked away. Years later, freed but broken, he teams up with a disillusioned detective to take down the corrupt power structure that betrayed him. Fueled by vengeance and a fierce will to reclaim his life, Kang-su's fight for justice blurs the line between hero and villain.