Looking like any high student, Mao Ran appears to be justa cute and normal young lady,but one with a fiery temper. She is also happens to be the heir to the Mao family tradition and is a master of the Mao style of unarmed martial arts. While Ran is reluctant to show her skills and avoids getting involved in any formal or competitive fights, her grandfather manages to succeed in tricking her into participating in a boxing-ring-style martial arts event called the Prime Mat. The challenge of fighting against strong rivals pushes her skills to the limit, and her initial reluctance gradually gives way to thrill and excitement as she looks forward to her next competitor..