Battle on the Asteroid
While passing through the asteroid belt on its way to Jupiter, the human-piloted Spaceship 301 suddenly finds itself surrounded by a cloud of clinging, purple fog. The crew broadcast an SOS to Earth, but communication is suddenly cut off, and all trace of the ship vanishes.
Aired 25/07/1989EP 16 - Battle on the Asteroid

1989
Transformers Victory
Set in 2025 A.D., Transformers Victory introduces Star Saber, the mightiest Cybertron warrior and the greatest swordsman in the galaxy. The Destrons are continuing to invade planets throughout the universe, so the Cybertrons have joined with the humans to form the Space Defense Force, with Star Saber as its leader. Leading the Destrons is Deathzaras, who has targeted Earth as the next planet to plunder...
(Source: Anime News Network)