A truck containing some of the Earth's dwindling supply of silver is guarded by the Centurions on its way to Geneva. It soon comes under attack from a group of jet skiers. The Centurions stop and capture them, but Jake's Fireforce get-up has been monitored and duplicated by Amber and Hacker. Later, Amber disguises herself as Jake with Fireforce, and together with Hacker, steals the silver for Doc Terror's experiments. Jake is then captured by Hacker, and Amber tries to persuade him to join them. Jake escapes confinement, and with the other Centurions, attempts to retrieve the silver.

Science Lesson: Snow by Jake.

Jake Rockwell is sent to give a lecture at Sally Ride HS in Los Angeles. One of the students there happens to be a boy named Jimmy, who has ESP and is picked on by the local jocks. After Jake's visit, Wild Weasel is accidentally left behind at the school, and Jimmy uses his powers to merge with the system. For him, Wild Weasel is a way to impress a girl. But Doc Terror sees them, kidnaps the girl and recruits Jimmy to do some of his dirty work. The Centurions save the kids and stop Doc Terror.

Science Lesson: E.S.P. by Jake.

A mad geneticist, Dr. Yates, attempts to create a lizard army, but is thwarted by the Centurions. However, during their struggle he accidentally injects himself with lizard serum and becomes a human chameleon, able to change form at will. He vows revenge on the Centurions, currently vacationing in Monte Carlo. The Centurions are not easily beaten, but when the enemy could be one of them, can even they win?

Doc Terror observes scientist Marina Abbot's ship heading out to sea and sends out sea-borgs to attack it. The Centurions are sent to defend the ship, while Marina summons help from a giant lobster. After the battle, Marina explains to Max that she has taken over her father's research, but wishes to keep it secret. The ship heads to the research base Neptune-1, and the Centurions observe the giant lobster and a giant turtle first hand. Marina tells them that the creatures are to be used by the World Council of Scientists and that each one can be controlled with an implant. She swears not to have her work destroyed by Doc Terror like her father's early research. Ace is later trapped by Marina, who tells him that she wants to lure Terror to the island and take revenge against him for her father. As Terror begins transforming the creatures into cyborgs, the Centurions arrive to defeat them.

Science Lesson: Swan ships by Max.