Who are “Dochu-shi?” They are street thieves. Ankuro’s blissful holiday with his parents is shattered when a group of thieves frame his father for theft and violently take his mother’s life. Fueled by grief and a thirst for justice, Ankuro vows to become a thief himself and challenge his parents’ killers to a match of thievery skills someday. 15 years later, having mastered his skills under the training of Oshin, his adoptive mother, he prepares to face his enemies in a series of matches adhering to the Dochu-shi’s code.