Lin Shen, codenamed "Shadow", was once a feared top killer in the industry. He had not been killed by a gun in ten years. After a mission, he would eat a bowl of spicy and vinegar beef noodles. On the first day after Jinpen washed his hands, fate threw him a seven-year-old girl - Su Maimai, an orphan from his neighbor. From then on, his world switched from sniping in dark alleys to tutoring homework, wearing crooked pigtails, and waiting for door lights late at night. He wants to retire, but his old enemies and organizations refuse to let go; he wants to be an ordinary dad, but his daughter's precocious eyes can always see through the blood all over him. With pursuit and conspiracy on one side, innocence and redemption on the other, Lin Shen danced on the tip of the knife, struggled between the bottle and the trigger, and finally recast his soul with his father's love, stopped killing with killing, and protected the little night light that lit up for him.
