Dr. Wong (Jess Franco) sends his gangsters to eliminate Mr. Jung. The "shadow of the judoka" of Bruce Lyn (Jose Llamas) appears projected in the wall and swears for revenge. In the meantime, Lina Romay and Albino Graziani, two british secret service agents, investigate Jung's murder. Wongs wants to get rid of Macedo, a phillippinean gangster in bad business, and dominate the market.

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