DIMENSION 5

Justin Power, an agent for Espionage, Inc., returns from a mission in which he used a time-travel belt to steal secret plans. He is told by his superior, Cane, that he is to be teamed with a Chinese agent to combat an Asian crime ring, Dragon, headed by crime lord Big Buddha. A sister agency has discovered Dragon plans to destroy Los Angeles if United States forces are not withdrawn from Southeast Asia.

Aware that Dragon has a primitive hydrogen bomb, but no way to deliver it, Espionage, Inc plans to interrogate a captured agent, Chang. Chang is being brought from Hong Kong by two agents—Sato and George—so they might learn Dragon plans. Chang insists that Dragon will see to it that he will never talk. An assassination attempt occurs immediately. Though George is killed, Chang survives when a female agent (unknown to the Espionage agents) shoots the assassin with a dart.

Informed of the incident, Power goes to Ontario Airport where he uses his time-travel device to "preview" the assassination. A man in a cowboy suit shoots Chang with a dart gun concealed in a camera, while Sato and the female agent watch helplessly. The shooter then escapes in a limousine with Big Buddha in the back seat. Powers then switches to the present, warns Sato by radio of the threat, and orders the limousine be prevented from following their taxi. Then he punches out the would-be killer, and the transfer is made successfully.

At headquarters, the Professor, and his assistant, Miss Sweet, subject Chang to a truth machine that forces him to tell what he knows at the risk of brain damage. During the process, Chang switches to Chinese and Sato has to translate. The interrogation of Chang reveals that a hydrogen bomb is being delivered piece-by-piece and assembled in Los Angeles, to be exploded on Christmas Day, three months away. Power meets his new partner, Ki Ti Tsu (Kitty), the agent who aided during the Hong Kong assassination attempt.

Power takes Kitty to a Cantonese restaurant run by an old friend, Kim Fong. He asks Fong about the black market (Power's cover is an importer) and he offers to help, until Big Buddha is mentioned. Fong's hostess, Nancy Ho—a Dragon agent—recognizes Kitty as a Chinese agent and forces Fong to give Power a bomb disguised as an owl-shaped incense burner. Kitty is suspicious because in China, an owl is symbolic of ill omen, and because she recognizes the hostess as an enemy agent. Power disregards her suspicions, and both happen to be out of the car when the bomb explodes.

Later, Power visits Ho and confronts her, demanding the location of the bomb. Ho is killed by Kitty as the former tries to stab Power. Kitty then turns Power over to Dragon agent Stoneface. This a ruse; she has her own reasons to meet up with Big Buddha, and after she signals headquarters, Power is rescued. Power then demonstrates the time travel belt to Kitty, warning her that she must limit her travels to areas that she knows will still be there in the future or past.

Power receives a message from Cane and learns the Ming company—the maker of the owl bomb and a front for Dragon—has a warehouse in Long Beach, and is expecting a shipment from Hong Kong on the Osaka Maru in three weeks. Power and Kitty time travel ahead the three weeks, unaware that they are being watched. When Stoneface wants to kill them with a disintegrator, Big Buddha has him killed instead.

Inspecting the warehouse in the future, Power and Kitty discover Uranium-238 in with the Christmas decorations, but are discovered by Big Buddha, who has been expecting them for the last three weeks. Limited by the restriction that he can only travel to locations he can see, Power bounces between barrels as Dragon agents hunt him. Kitty confronts Big Buddha, wanting revenge for his war crimes as executioner during the Nanking Massacre, including the death of her parents seven years earlier, but she is captured. Power surrenders to Big Buddha to save her. Big Buddha plans to ship Power to Hong Kong to extract secrets from him.

Unexpectedly, Big Buddha's mute servant girl tries to stab him. Power uses the distraction to turn on Big Buddha's bodyguard, Genghis, and a furious fight develops. The much larger Genghis overpowers Power. Finally, Kitty manages to toss Power a gun, which he uses to shoot Genghis down.

Big Buddha by now has forgotten all about his servant girl, who has been waiting for her chance to stab him again. This time she kills him.

Power and Kitty return to the present to use their knowledge to stop Dragon again without time travel, and let Cane's people do all the work.

Justin Power and Kitty, using the time-travel belt and information gained through interrogation, successfully prevent the Dragon syndicate's hydrogen bomb from detonating in Los Angeles.

The film’s resolution hinges on the creative use of the time-travel belt and classic spy tactics, blending science fiction with espionage to foil a catastrophic plot. By neutralizing the bomb and the Dragon organization’s threat, the protagonists reaffirm cooperation across national lines and the inventive possibilities of genre hybrids. In true 1960s fashion, the world is saved not just with brawn, but with brains and a dash of futuristic flair.