A new member of the gymnastics team tries to fit in. Elsewhere, men in black suits smash gold medals apart as if looking for something valuable inside them. This takes the team searching around San Francisco for answers to their first mystery.
When Sky Red Fern sends the team a phony invitation to a meet, she puts herself and her teammates in danger.
As the team visits Seattle, Kim's father, Mr. Nakamura, a software designer, is on urgent business with other scientists. However, a mysterious person using a mind-controlling device steals the minds of the scientists including Mr. Nakamura to obtain certain knowledge. The team plans to find out the mystery and save the scientists and their minds from this evil foe.
A very mysterious and very deadly virus has been stolen from the Salt Lake City Institute. It's up to Mr. T and his gymnastics team to locate the virus and to catch the crooks that stole it!
Mr. T and the team are in Mississippi planning to turn a rundown plantation called "Magnolia House" into a gymnastics camp, but a gang of street car thugs called the Ghost Riders threatened to eliminate the team. Jeff's bragging to a pretty girl gets overheard by the Ghost Riders, who use that information which puts the team in danger. Rumor has it that the original owner of Magnolia House left something behind, and the team has to figure out what it is.
While in Washington, D.C., Ms. Bisby does a crossword puzzle finding a clue to the puzzle. However, once the word was said, Ms. Bisby falls into a hypnotic state. And she's not the only one. Two college professors are also hypnotized.
The team has a meet in New York City not too far from a movie location. At the same time, a mysterious ninja is robbing stores nearby and is looking for something in particular. The team has to unravel the mystery before the ninja makes a clean getaway.
Mr. T was placed under arrest while the team was in Mexico City where strange thefts from a museum happened. With Mr. T in jail, the team try to help by finding the real criminals and uncover an ancient pyramid. Once inside, the team discovers 4 Aztec warriors standing in their way.
Bisby's late-night run-in with a classic car called the "Silver Swan" prompts the team staying at Lake Tahoe to investigate. Unknowingly, a local car dealer, museum staff and the car maker's original owner are part of an illegal automobile ring planning to sell duplicate copies of the Silver Swan and other vehicles. Robin tries to do everything for the team so she can get credit for this caper as well as the upcoming meet.
While en route to Las Vegas, the team discovers an illegal military operation. Meanwhile, Courtney is torn between leaving the team and going to military school.
The team takes a rest in Miami and sees an air show starring Jeff's cousin "The Great Marco". During his air show stunt, which involves dropping a sports car by parachute, he turns up missing causing Jeff to worry. Meanwhile, Woody has fallen for a woman named Vanetta Price whose involved in something Woody doesn't want to know. His jealousy almost got him and the team in hot water as they make their way into the Everglades to try and solve this swamp of a mystery.
The team heads into Monterey Bay to see an auto stunt show done by the Turbo Team in order to impress a Hollywood director to use their cars for his movie. At the same time, Robin develops a crush on the team's leader. However, a woman and two men are after something and plan on using the Turbo Team's prize automobile, the UltraCar to take it. Mr. T's wheels are spinning to solve this mystery before this caper speeds out of control.
The team are in Colonial Williamsburg, Virginia to help restoring an old house. Spike ignoring his reading problem lands him in a mess of trouble when two crooks posing as Colonial soldiers raids a Colonial home for directions to a secret cave where a valuable diary is buried. Luckily, Spike makes it out OK, but he has to put his pride in check, while Mr. T and the team get to the bottom of this colossal Colonial caper. Mr. T's Moral Lesson: Not being afraid to ask for help if you have a problem.
After a successful charity meet, Mr. T takes the team to the city of Samana to receive a cargo ship full of food, water and surplus aid to the village. Unfortunately, a crooked businessman named Saber hires mercenaries to hijack the ship and plan on selling the goods on the black market. Mr. T must now lead his team to find Saber and put him and his gang behind bars, and at the same time to teach the team about how situations in other countries are much different then where they live and rely on surviving in the desert. Mr. T's Moral Lesson: Being grateful for the food you have.
Heading back to Chicago, Mr. T visits an old friend named Jimmy Stone, the owner of a youth center. At the same time, Courtney visits the gym to hopefully train with gold medalist Sally Owen, which Courtney finds out is more interested in herself than others. Sally's actions would later get her barred for life, but the real big issue is a shady drug dealer named Speedy and his henchmen who plan on framing Jimmy in which to use the youth center for his drug operations. Jimmy helped T get out of a gang during his youth and it's up to T to help him stop Speedy before everything comes tumbling down. Mr. T's Moral Lesson: Picking the people you admire more carefully.
Just because someone's young, it doesn't make them worthless nor unbelievable. Jeff and Woody know that for a fact now. Back then, while the team was having a free tour of the Play Town amusement park, Spike saw two of its mascots, Marvin Mouse and Dingy Dog, acting suspicious and no one wanted to believe him. In truth, they were career criminals dressed as mascots in order to retrieve gold bars from an active gold refinery in Play Town's Frontier Town section. Mr. T's Moral Lesson: Never underestimating someone because of their age.
Heading back to New York City, the team does charity work and a new member of the team named Grant Kline has just signed up. Grant done athletic programs at the same high school as Jeff, but he has a falling out with his old friends, a group of bullies called the Chain Gang and their leader, Blade. They had Grant keep quiet about their activities or they will tell the police about his previous mistake of helping the Chain Gang steal a car, putting him in a precarious position. Mr. T hopes to help Grant erase his past and correct his mistakes in order to break the links to the Chain Gang. Mr. T's Moral Lesson: Making the right kind of friends.
An out-of-this-world caper occurs at Kennedy Space Center in Florida's Cape Canaveral. Robin brought her camera to take pictures for her school which Woody tries to take without permission. Suddenly, Robin sees two spies trying to take a photo from inside the shuttle. The spies have been hired by terrorists to blow up the shuttle as soon as it reaches orbit. Unfortunately for Robin, she got captured and it's up to Mr. T and the team to stop the launch, save Robin, and bring the spies to justice in this mystery of a final frontier. Mr. T's Moral Lesson: Respect for other people's property.
