In Episode 1 they leave Earth to compete with other teams in outer space. They aren't taken serious and eventually lose against Team Dradd, the first team ever they race against. But Kaz Gordon is still sure that they will become Number 1.
In Episode 2 they return to Earth to continue learning from Coach Ray at the Scan2Go Training Facility on Earth. At night, Kaz Gordon attempts to return without his team. After this has failed he still wants to go with his team. They have to race against their coach and finally win.
In Episode 3 back in space they participate on an Exhibition Race and race against Team Penguin which consists of five penguins. They have almost lost when it turns out that the penguins have cheated and simply changed the cars on half way and weren't five but ten penguins. They also see Shiro for the first time and race with him.
In Episode 4 they are chained by the Space Pirates and their leader Hebina. Later they fight against them. After every Racer except Fiona is out, she defeats the Space Pirates. They want to bury the hatchet, but Hebina isn't serious with this.
In Episode 5 Team J.E.T. take a detour to a planet, but find that it has been tainted by a group called 'Rhino' and they then challenge Rhino to a race, in order to win back the planet for its civilians.
In episode 44, (Repatriation! Rescue! Withdrawal!, Team J.E.T. returns to Earth to participate in the Final Grand Prix and meets up with Coach Ray who shows them the news Scan2Go Training Facility on Earth.