While on a botanical expedition in Tibet Dr. Wilfred Glendon is attacked in the dark by a strange animal. Returning to London, he finds himself turning nightly into a werewolf and terrorizing the city, with the only hope for curing his affliction a rare Asian flower. 　　译文(2): 在西藏的一次植物探险中，威尔弗雷德 · 格兰登博士在黑暗中被一种奇怪的动物袭击。回到伦敦后，他发现自己每晚都变成狼人，威胁着这座城市，唯一的希望就是用一种罕见的亚洲花朵来治愈他的痛苦。