少林叛徒韩先生(石坚 饰)背叛少林后,斥资买下一座小岛将其改造成私人王国,韩先生及一干手下在岛上制贩毒品,强迫女性卖淫,警方欲将其绳之以法却苦无证据。少林高徒李(李小龙 饰)的功夫已经超越有形境界,他受师傅与政府请托,准备参加三年一度由韩先生主办的比武大会。比武大会期间,是登陆孤岛搜集证据的唯一机会。同时韩先生的私人保镖熬加达曾经杀害了李的姐姐,是李恨之入骨的仇人。 比武大会的邀请发出,世界各地选手纷纷聚集,有债务缠身的鲁柏、勇于对抗不公的威廉士等人与李一同登岛决一雌雄。李找到了政府在岛上安插的情报员美玲,在后者的帮助下,李与各路选手以及韩先生展开了一场龙争虎斗。Enter the Dragon revolves around the three main characters. Lee, a man recruited by an agency to investigate a tournament hosted by Han, since they believe he has an Opium trade there. Roper and Williams are former army buddies since Vietnam and they enter the tournament due to different problems that they have. Roper is on the run from the Mafia due to his gambling debts, while Williams is harassed by racist police officers and defends himself from them and uses the car for his getaway. It is a deadly tournament that they will enter on an island. Lee's job is to get the other two out of there alive.