Richard Kuklinski, a professional killer, has killed more than 100 people in his life. He often freezes the bodies of his victims into ice to cover up the time of death. He is known as the "Iceman" in the underworld. He has professional ethics and does not kill women and children. On the other hand, he is a good family man, and his family never knows his dark identity. In life, this gentle and gentlemanly man deeply loves his beautiful wife and two lovely daughters. But secrets are never easy. Until the day when the truth comes out, the keeper of the secret is destined to carry the secret and move forward with difficulty: the brutal killer identity and the deep and strong love for his family make this "Iceman" struggle in the soul all day long.