When Masterspy sabotages an experimental nuclear powered train in an attempt to kill Dr. Beaker, Mike's only chance to save him is to use an untested magnet designed to grab small vehicles.

Professor Popkiss orders a special cooking wine from France, but when the crate arrives everyone gets quite a surprise from its contents - there's a girl inside.

When Mitch unties a rope that is securing the Professor's latest project, a gas-filled balloon, it takes off with Mike, Jimmy, and Dr. Beaker aboard. So it appars to be up to Professor Popkiss to fly Supercar to their rescue.

What at first seems a simple job training airplane pilots turns into a situation where Supercar must stop Masterspy and Zarin from taking over an airliner in mid flight.

Answering a distress call, Mike and Beaker find that a Professor Karloff plans to take over America by reducing all its citizens to miniature size, but then find themselves on the wrong end of his shrinking ray.

Mike must take Supercar into oribt to rescue his pet monkey Mitch, who has accidentally launched himself in a rocket to outer space.

On the hunt for the person who engineered the planting of atomic bombs all over the United States, the Supercar team find themselves captured by the culprit, a villainous sheriff.

Professor Popkiss comes down with appendicitis. After the operation, Mike has to fly to the Arctic to get the closest blood donor who has Professor Popkiss's blood type.

Masterspy's latest plan to gain possession of Supercar is to offer to buy it outright - using counterfeit money.

In the middle of Mike's birthday party, a stranger from outer space arrives and freezes time for everyone but Mike.

The Supercar team discovers that Masterspy has tapped a transatlantic cable, and is able to use this to track him back to his underwater lair.

Mitch switchs places with a musical gorilla.