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Deathfight dwells upon a fascinating martial-arts skill known as shootboxing. Until the thrilling climax, however, the film is somewhat plot heavy. An aging smuggler selects his adopted son over his natural son as his successor. The jealous loser contrives to frame his stepbrother on a murder charge. Ten minutes or so before fade-out time, brother faces brother in a painful (and R-rated) winner-take-all showdown.