· Male protagonist: Shen Mohan - 26 years old, a feared gangster in the city, ruthless and paranoid, with blood on his hands and a heart as cold as iron. But for the heroine, she lost control from the first sight. All principles were broken for her, and all tenderness was only given to her.
· Heroine: Su Nian - 18 years old, a senior high school student, from an ordinary family, with a soft and simple personality, like a small white flower growing quietly in the corner. Afraid of him, hiding from him, but in the end unable to escape from the sweet prison woven by his own hands.
