In 19th-century China, the village of Sin-Chou is terrorized by the seven powerful vampires of the Chang Dynasty. When Professor Van Helsing arrives, a desperate village elder seeks his aid, believing his ancestor's amulet can defeat the vampires. Helsing, along with his son and a group of martial artists, embarks on a perilous journey to the vampires' castle to confront them.

This Hammer Horror film, a co-production with Hong Kong's Shaw Brothers, is notable for its blend of gothic horror and martial arts action. While criticized for its sometimes clunky plot and uneven pacing, it's often praised for its unique concept and Peter Cushing's committed performance. It holds a cult following among fans of both Hammer films and martial arts cinema.

• A unique fusion of Western horror and Eastern martial arts.
• Peter Cushing delivers a strong performance as Van Helsing.
• The plot can be somewhat convoluted, but the action sequences are engaging.

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None notable.

This was one of the last Hammer Horror films to be produced and was an ambitious attempt to revive the studio's fortunes by blending their gothic horror style with the burgeoning popularity of martial arts films.