List of Speed Racer: The Next Generation episodes

Speed arrives at the Racing Academy and meets all of the main cast. With no race car of his own, Conor lets him use a junky, spare one for the Qualifying Race, known as "LOST HERO". Having destroyed the car, his key, which was left to him by his mysterious father, glows, and leads him to find the Mach Five's hood disassembled from the other pieces of the car. Speed and his friends rebuild the Mach 5 and test it out. However, Annalise, under Zile's orders, destroys it in a match against X. Spritle reveals a shocking surprise to Speed; that he is Speed Racer's son and is X's long lost brother. Speed and his friends discover the secret plans to build the Mach 6 and its unique engine from the remains of the Mach 5. Speed uses the new car to race once again against Annalise, and wins.

Thanks to Joel the lab technician, Zile takes over the virtual track to mess up Speed's race at the Redwood Rally so he doesn't survive. After Speed suspects whats going on, he decides to investigate, but in the process, Speed, Annalise and the Mach 6 all get sucked into the virtual track. While Speed and Annalise are still stuck in the virtual track, they must put their differences aside to survive. Meanwhile, Conor, Lucy, and X must find a way to get them out before the track eats itself up due to the virus, or they'll be stuck there forever. Two vehicles from the original show- the Mammoth Car (from episodes 7 and 8) and the X3 make cameos in this episode. Speed and Annalise make it out of the track. Delighted, Zile finds out Joel installed the virus, and decides to promote him to make the track more deadly for Speed and the Mach 6. One thing Zile is not aware of is that the Mammoth Car, the X3, and Jungle Conor invade the real world to wreak more havoc. Meanwhile, the Jungle Conor kidnaps Annalise.

In this clip show showcasing the last 12 episodes, Speed must complete Professor Nguyen's assignment about what he learned since joining the academy.

Trillionaire Dickie Ranford challenges anyone who dares face him to a three-day race inside the virtual track, against his new eco-car, which will run on only one tank of gasoline for the entire run. Speed competes, as winning Ranford's industry will finally enable him to finish refining the Mach 6. Zile also participates, intending to beat Ranford at his game and crush the Mach 6. By the second day of the race, both the Mach 6 and Chim-Chim get smashed by a canyon avalanche overnight. Speed uses his wits to go forward by using the natural elements to their advantage. At first, they think Zile tricked them into going the wrong direction. But they soon discover that it was Ranford who caused the avalanche and wrecked their car... and that his Eco-car is only keeping the emissions building up inside the front hood and he is actually storing leaded gasoline in Ranford Cola bottles to use for later, proving him a complete fraud. Speed shares the secret of the eco-car to Zile, who reluctantly lets Speed pass ahead of him so he can beat Ranford for him. At the finish line, Speed wins first place, and Ranford's car breaks down, earning him last place, but costing him his secret, and his reputation. When Speed starts planning his future with the industry, the press shares that Ranford industries went bankrupt and that the only things left were 2500 desks, chairs, staplers and a six pack of Ranford cola.

Conor invents a new camouflage defense mechanism for the car, which activates unexpectedly when Speed and Chim-Chim walk inside, leaving them invisible. Zile launches a heist to steal the Mach 6 at night, but cannot see the car, and captures Conor instead. Meanwhile, X and Annalise's relationship becomes strained. The camouflage feature malfunctions, Speed is caught sneaking around trying to save Conor, and the entire gang makes a retreat. They leave the Mach 6 behind, but to Zile's disappointment, there is a force field around it, and it becomes invisible again. A suspicious Spritle calls the police, where the gang doubles back to save the Mach 6. His plan now exposed, Zile flees the campus and leaves Annalise in charge of Zazic Industries. The news of Zile being a traitor is now widespread among the campus. Annalise continues to carry out Zile's plan by taking X-ray shots of the Mach 6 during a race, under the shadowy woman's orders. Annalise also breaks up with X for good. Meanwhile, Zile and Stan keep having to move out of their luxurious global hideaways whenever Stan gives away their location.

During the final days of the term, Dr. Chezko, an engineer and old friend of Speed Racer's, arrives with a chamber that will finally run the Mach 6 on purely natural energy - its final piece - and asks Speed's permission show it off to the academy. Zile, returning undercover as a janitor, works with Annalise to steal the chamber and embarrass Speed by replacing it with a double. Meanwhile, Spritle plans a family bonding trip to his camping retreat for the break. Zile and Annalise steal the Chezco chamber and keep it hidden until they can meet with the head of the committee; Speed and X sneak into Zile's tower. Once they do, Conor and Lucy both return to help Speed and X regain the Chamber. But once they do, Zile and Annalise do whatever they can to get it back. Before Speed can activate the chamber he must go a speed of 820 miles per hour. After he does this the chamber won't work until they make a special cloth. When Chesko and Conor do this Speed enters the Mid winter race. Speed realizes that the chamber will only work when it has air, so he chooses to use the air in his car to power the engine. He wins the race and returns to the track with only a little air left. In the end, Chezko turns out to be Speed Racer Sr.'s engineer, Sparky. X decides to go pro, which would mean leaving the school. Speed Racer Sr. finally reveals himself to his son, Speed. NOTE: This is the final three-part special to air on Nickelodeon on April 11, 2009.

Speed, X, and Chim-Chim return to their home dimension. Unfortunately, they end up back in Committee headquarters, but they decide to use it to their advantage and grab all the files concerning the Hourglass Part and the Mach 6. When trying to escape, they come face to face with the Shadowy Woman, who reveals herself to be Trixie Tredwell Racer, Speed Sr.'s wife and X and Speed's mother. She tries to get X and Speed to join her, but they refuse and escape with Chim-Chim. Meanwhile, Annalise, Lucy, and Conor are still running from the Committee soldiers. Speed contacts them, and they agree to meet up and escape. X and Speed however find themselves in their old neighborhood. They walk into their old house and run into Speed Sr., who explains to them how Trixie, their mother became the Shadowy Woman. When the boys were younger, Trixie's father and Speed Sr. worked together to design a prototype for the Mach 6. When Trixie's father wanted to race it, Speed Sr. refused, and Tredwell ended up losing control of the car killing himself and hitting Trixie at the race station. Trixie inherited the company and became the Shadowy Woman and the CEO of the Committee forcing Speed Sr. to take the boys away. The Racer men's conversation is then interrupted when Annalise, Lucy, and Conor come in still being chased by the Committee. Speed Sr. takes the Mach 5 while the boys join their friends in the Mach 6. They try to get away, but Trixie comes onto the scene and confronts Speed Sr. while Speed, X, and their friends get away. Unfortunately, Speed Sr. is seemingly killed in an explosion. Deeply saddened by this, X and Speed decide to go back in time with the Hourglass Part to prevent the accident and bring their father back. They travel with Lucy and Conor back to before the accident. They convince a young Spritle to let them see the prototype, but Zile and Stan follow them in and get them caught. Aniskov keeps them in detention, but with Chim-Chim's help, they escape and manage to stop the accident from happening. However, Zile has overheard them talking and realizes that they are from the future. He and Stan take the Mach 6 but are thwarted by Speed and the gang. He is arrested, and the crew returns home safely to find X and Speed's parents happily married and their family still together.

Series Finale. The crew returns to the present to find that Speed Sr. and Trixie are happily married, and that their anniversary party is the next day. Speed and X find Speed Sr. a gift while Lucy helps them find Trixie a gift, since they never really knew their true mom. The party soon turns into trouble when Speed Sr.'s brother, Rex Racer (Racer X Sr.), comes into the party. Speed Sr. and Trixie order him to leave, knowing he has some troubles, but he tell them that a factory is going to be blown up. Speed and X decide to visit him, who he then tells them about the enemies' plan. X becomes cautious and think that he and Speed should leave. Rex goes to the factory alone where half-robot-half-car roborgs are preparing to blow the plant up. X and Speed see an explosion as they are driving and check it out finding the factory blown up and X Sr.'s car smashed, with him missing. They tell their parents, who scold them for disobeying them. Speed and X soon decide to ask Spritle for help, but find him missing and his office ransacked. Meanwhile, Speed Sr. is preparing to do a commercial, and decides to let the police deal with Spritle's disappearance as he feels the commercial is more important. Briefly after this, Trixie visits the garage, believing Speed is there trying to come to terms with Spritle's disappearance, only find the Iron Menace. During the motor oil commercial Speed Sr. is arrested for the disappearances, due to evidence found in the garage. Speed and X visit him in jail, but as they are leaving, an explosion occurs, and they witness roborgs take their father; while racing to the rescue, Annalise cuts them off and crashes into a cliff face. Speed and X rush to her aid, only to find that she is actually a robot. Back at the school, Iron Menace, speaking through Annalise explains that he has the missing Racers and how to find him. At his lair they enter a virtual track and discover that Zile, now a cyborg, is actually The Iron Terror. X and Speed have to navigate a virtual maze to save Rex, Spritle, Trixie, and Speed Sr. from getting 'erased' in a giant hourglass. With some help from Chim-Chim everyone is saved. Zile then escapes with the robot Annalise and Stan (now a brain in a jar). Speed and X then chase after them, only to find that they have created a new hourglass part. X and Speed catch up to Zile, but just as they seemingly block his only avenue of escape Zile time travels. Afterwards, Speed Sr. apologizes to Rex and they, along with Speed and X, race on the virtual track.