Andy was an orphan child, but was adopt into an organization by a wealthy family trained to protect the boss's daughter and to become a cold hearted machine. But Andy isn't who you think he is, he was actually a female forced to keep her true identity hidden. Her objective was to keep the boss's daughter away from danger and to show NO mercy to those who harm her. However, she meets someone that will may be the one to melted her stone cold heart. Will this love get in the way of her job? Will he be the one who melt the heart of this cold hearted machine.