The Secret Invaders (Part 1)
Speed is in the exotic and mysterious city of Ambrosia, high in the Mystic Mountains on Lake Ripplelapps. It is the start of the Mystic Grand Prix. Piston Powers holds the pole position. Racer X is also in the race. Prince Snowier and Princess Gracious preside over the race, and Princess Gracious will signal the start. A sniper has the princess in his sights. A reflection from one of the cars in the race distracts the sniper and he misses. He runs and Speed chases him in his supercharged formula one. The two wrestle on the roof of a building. Speed prevails and the gunman falls to his doom. A secret meeting is being held in one of the suites on a train leaving Ambrosia. One of the men has the mirror that was used to distract the sniper. Among those suspected of using the mirror are Bearcat Stutz of the country of Pong Ping and Tailgate Jones of South Bosawania. The three most likely candidates are Rusty Muffle, Tailgate Crumple and Speed Racer. Avalonia is the next stop, where the haza
Aired 26/01/1968EP 38 - The Secret Invaders (Part 1)

Speed Racer
The Mach 5 is one of the fastest and most technologically advanced race cars built by man. Equipped with various gadgets and a powerful engine, it provides a challenge for anyone who would dare race against it. The driver of this amazing vehicle is Gou Mifune, a teenager who dreams of breaking into the world of professional racing.
In spite of this, Gou's father and the creator of the Mach 5, Daisuke Mifune, does not want his son anywhere near a racetrack. Undeterred, his girlfriend Michi, younger brother Kurio, and Kurio's monkey sidekick Sanpei become Gou's biggest fans as he sets out to become the greatest racer of all time.
However, Gou soon learns that becoming a professional racer is not easy. From the underhanded plots of corrupt businessmen to stiff competition in the form of his rival, Racer X, Gou faces many obstacles on the road ahead, and has a lot to prove before he can cross the finish line.
(Source: MAL Rewrite)