David Portnoy, a 15-year-old birding fanatic, thinks that he's made the discovery of a lifetime. So, on the eve of his father's remarriage, he escapes

　　她曾是格鬥員，放棄格鬥之後，卻為了拯救自己的妹妹又回到這個地下非法的搏擊世界。即將在格鬥場上再掀起一場世界賭注之戰！