玛丽萝丝为了调查地下决斗场的幕后黑手，主动参加了地下决斗。对自己的实力过于自信的她按照规则戴上了一个诡异的项圈。
打败许多普通打手后，竟然出现了恶魔族凶汉作为对手，但玛丽依旧利用自己灵活的战斗技巧占据了上风。
可是，场外观众期待的都是女神的败北，而那个项圈也...

Marie Rose joined a under ground arena event to investigate the person behind it, she is too confident about her power, so she accept the rule and put on a strange choker.
After beaten many opponents, she faced a demonic hunk, her agile fighting style gave her advantage, how ever everyone outside that ring are looking forward to her failure, and that choker is also a......