When Steve discovers that there is another bionic man - Barney Hiller, a race car driver - he is assigned to help him adjust to his bionics.

When a plane carrying an atomic warhead crashes on a South Pacific island, Steve is sent to retrieve it, but finds that an ex-Japanese Zero pilot, Kuroda, has taken it to his home. Steve must successfully navigate his way through the booby-traps and get the warhead before a rogue guerrilla group does.

Steve Austin buys a ranch in his hometown of Ojai, California. He reunites with childhood friend Jaime Sommers who is now a professional tennis player. They rekindle a brief childhood romance. Jaime Sommers is injured in a skydiving accident when her parachute collapses toward the end of a jump. Her right arm, right ear, and both legs are severely injured. With Jaime’s life in peril, Steve Austin persuades a reluctant Oscar Goldman to fit her with bionics. Although skeptical at first, Jaime Sommers quickly acclimates to her mechanized components. The bond deepens between the two bionic humans. Steve Austin proposes marriage to Jaime Sommers, and she accepts.

While Steve Austin and Jaime Sommers plan their wedding, Oscar Goldman submits his bill for making Jaime Sommers a bionic woman: She is to go on her first assignment with her fiancé to switch a flawed U.S. $20 bill printing plate for a perfect copy in the possession of a foreign counterfeiter named Joseph Ronaugh. Steve Austin vehemently objects, but Jaime Sommers acknowledges her debt and agrees. The two succeed in their mission despite a malfunction in Jaime Sommer’s bionic arm which nearly causes it to fail. It is soon discovered that her body is rejecting the bionics. Dr. Rudy Wells conducts an emergency surgery to no avail. Jaime Sommers dies.

Steve Austin's bionic legs are heavily damaged during a mission and while recuperating at Dr. Rudy Wells' hospital, he catches a glimpse of his fiancée, Jaime Sommers, still alive but recuperating.

Steve Austin takes the recuperating Jaime Sommers to their hometown of Ojai in an attempt to jog her memory. Unfortunately this only results in her getting violent headaches and confusing flashbacks.

Bitter explosive expert Robert Meyer arranges for the Liberty Bell to be stolen, rigs it with three bombs and demands five million dollars. Complications mount up and Steve Austin is forced to ask imprisoned bomb expert Linstrom to help defuse Meyer's handiwork.

Steve is assigned to keep an eye on his college buddy, the entertainer John Perry. Oscar suspects the singer of being a courier for an espionage ring.

Steve and Rudy go to check up on scientist, Cheryl Osborne, who was performing research on chimpanzees but who has ceased communications. When they arrive they find something has destroyed the lab, and Rudy is bitten by a rampaging chimpanzee. Rudy begins to turn psychotic and Steve must both stop him and find Osborne before it's too late.

When an object tracks across the sky and lands in a remote area in Wyoming, Oscar and Steve arrive on the scene and find that a Russian space probe built to withstand the extreme Venus environment has crash landed on earth and is out of Soviet control. It's up to Steve to try to stop the probe from destroying a nearby town.

With time running out, Steve must do anything he can to disable the Russian space probe in spite of the fact that it is virtually indestructible and has numerous inventive capabilities that it uses as weapons.

A scientist covers up his sabotage of a B-1 Bomber experiment.

Two locals join Steve when he attempts to rescue a group of students in a stalled cable car halfway up a mountain. They must rescue the students before a tornado gets to them, but one of the men is a criminal and the plan is put in jeopardy.

Steve investigates his girlfriend's disappearance while she was piloting a new plane with anti-radar technology. He discovers one of the plane's technicians has been talking to a known trader of military secrets and starts the search for further clues.