*I missed you, Dad. Did you miss me too!?" Gang member Ryu Nanmu may be one of the top dogs in his "organization," but in life he's hit rock bottom. He dreamed of building a family once, with his boss mistress and her son Pil-gyun, but he's had to pay dearly for coveting something that could never be his. After several long years, the hope for a family had become barely anything more than a nostalgic memory for Nanmu...until a grown-up Pil-gyun dramatically reappears in Wanmu's life. Except, this isn't the child that Nanmu remembers. Pil-gyun is calculated, deadly, and obsessively in love with him. Although Nanmu knows he should put an end to this futile relationship, Pil-gyun's tender words of love can't help but tug at his heartstrings...