The Rebirth, Part 1

The Rebirth Part 1 was to be the fourth season premiere, but due to declining interest, it simply was the first of the 3 final episodes in which a slew of new characters and concepts are introduced, most notably the US animated version of the Headmasters.

Things have been quiet for the Autobots in the months since the return of Optimus Prime and the hate plague crisis. But all that changes when Galvatron leads every functioning Decepticon on an all out assault, attacking first Autobot City, and then Cybertron itself.

During the onslaught, Kup and Hot Rod's team notice Scourge heading for the Plasma Energy Chamber. They pursue in an attempt to stop him, but when they're hit by a wave of energy from the Plasma Energy Chamber, their ship is hurled all the way to the distant planet of Nebulos.