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When kung-fu student (Meng Fei) must face a critical test in order to complete his training in the mysterious "Iron Body" method, the perils involved prove to be more than he bargained for. Fei must enter a series of chambers, each containing a foe deadlier than its predecessor. If he makes it through alive, he must face the infamous Ghost Faced Killer (Mark Long), whose kung-fu skills have delivered many a fatal blow. The Unbeaten 28 also features Jack Lung, Nancy Yen, Jeannie Chang, O Yau Man, Ma Cheung, and Mau Ging Shun.