His family cursed by a witch, Waldemar Daninsky (Paul Naschy) seeks the help of a Jewish doctor to cure him of his annoying habit of turning into a werewolf. The doctor is attacked by some local Christians in hoods and, before he dies, he tells Waldemar to head to Japan to seek out another doctor who can surely help him. So the Daninsky family head to the land of the rising sun to battle his curse of the full moon.
This is a pretty fascinating take on the werewolf myths Naschy had been building for over a decade in his native Spain. Apparently the Waldemar flicks were big in Japan and a company offered to co-produce this movie if he set it in Japan. The end result is really unlike any werewolf movie. Where else can you see a werewolf and ninjas (besides your nightmares)? Naschy directs and always has his eye on exploitation. For example, the werewolf bursts into a home and, when grabbing the women, always rips off their tops. There is also a crazy battle between the wolf man and a tiger (a real tiger is used) and a surreal sequence complete with snow falling where Japanese lead Shigeru Amachi fights off several otherworldly foes in order to gain the mythical sword that can kill the werewolf. The film is a tad overlong (1 hour and 45 minutes) but definitely worth seeing for a werewolf tale off the beaten path.