Lee heesung is a criminal leader, he is famous for his own ruthless and strong personality, stern tone and piercing gaze. And he has a daughter who named Eunha, who is 6 years old. She is his everything in life, he loves her more than anything, she is his shiny sun in his dark life, even though he hates and killed his ex-wife.

And today, he was spending time with his precious daughter, when she saw a butterfly, she immediately let go of her father's hand and ran towards the car road...