Life-Form Number Three
The 999 reached a system when a battle took place between two planets, Maya and Zaba. Meanwhile one of the planets in the system was about to explode and destroyed the two worlds. Two Zabans, Seth and Rei took a spaceship to colonize another planet (planet No. 3) in the system. The 999 was also forced to land on the planet. Tetsuro and Maetel were ambushed by an ape man, who stole their passes. The ape man turned out to be Mayan Rossa, who arrive 3 months ago with his companion Luna, but the planet's energy devolved their bodies. They wanted to trade the passes with the Zaban spaceship, but Rei took them hostage while Seth returned the passed to Tetsuro and Maetel.
Aired 31/07/1980EP 83 - Life-Form Number Three

Galaxy Express 999
After witnessing the death of his mother and being left for dead at the hands of Count Mecha, ten-year old Tetsuro Hoshino is awakened by a mysterious woman, Maetal. In exchange for only his company, Maetal offers him the ride of his life on the Galaxy Express 999. It is said that those who travel aboard the legendary train to the end of the line can receive a free mechanical body and with it, immortality.
Impoverished and alone, Tetsuro leaps at the opportunity and joins Maetal on a quest that will span the cosmos. As the Galaxy Express 999 makes its way across our solar system and beyond, Tetsuro is drawn deeper into a dangerous universe where peril lurks at every stop.
(Source: Discotek)