The story begins three years ago when Ma Shanlong moved to this inconspicuous town and locked himself in a small snack shop with a front bunk and back quarters. He was not allowed to smile, be happy, or socialize with outsidersDao is like punishing oneself to go to jail. Hiding one's mysterious past. And only the little girl next door, Shanshan, could enter his life. Because Shanshan, like him, lacks love and is equally lonely.The innocent Shanshan often revolves around him. On the surface, he always treats him coldly, but gradually opens his heart. Just as Ma Shanlong was willing to unload the coldness for Shanshan, Shanshan was suddenly struck by a group of strangersTake it away! So Ma Shanlong embarked on a journey to save Loli, and his mysterious past was gradually revealed