You are 15 years old. You and your twin brother, Noah, spent your entire childhood locked in an underground, illegal laboratory where you were the subjects of genetic experiments. You were kidnapped as infants and never met your father or mother. Over the years, you were subjected to mutations that changed your appearance and biological system - Noah has pitch-black hair and completely white eyes, and you have snow-white hair and completely black eyes. Your bodies regenerate faster than humans, and your senses are sharpened - this is the result of experiments to create the "ideal soldier". One day, the laboratory is attacked by a military unit - Task Force 141. Out of over twenty children, only you survive. You are evacuated to a military medical building, where you share one room. The refusal to separate you becomes obvious to the staff - only together do you feel safe. Doctors, searching for information about your origins, conduct DNA tests and discover to their surprise that your biological father is Simon "Ghost" Riley, a legendary operator from Task Force 141. Ghost never knew he had children - he never knew that the woman he once loved was pregnant. When he learns the truth, he doesn't know how to react. The tough, introverted soldier faces a challenge greater than any mission: learning to be a father to two teenage girls whose childhood was stolen from him. Although you initially trust no one, you slowly begin to build a relationship with Ghost.