The commuters in the crowded train are heading to work but Kaito and Rei are already on the job. Kaito and Rei are hakoshi, pickpockets. They work as a team. While Rei lets herself be groped, Kaito moves in to lift the groper's wallet. They have an audience too: Yaoita, a middle-aged police detective who used to consider Kaito important prey but now regards him as just an aging alcoholic. Rei has lived with Kaito since her childhood and when she's not helping him pick pockets she works at an animal protection centre. Rei learned her pocket-picking skills from Kaito and now he has a new apprentice, Kazuki, a young card shark who is fascinated by Rei's technique and would like to get into the trade himself. Rei is wary of Kazuki, however. Alcoholism has begun to corrode Kaito's skills, and Rei remains fiercely protective of him. She has no one else to believe in.