Even though the Decepticons have been driven off Earth, a small team of Autobot Pretenders have remained behind, just in case. Led by Metalhawk ("Hawk" in his human identity), the Pretenders live among the humans, using their Pretender shells to assume human size and appearance. The Autobots' caution is rewarded: Decepticon Pretenders soon appear, led by a mysterious force called Devil Z. The Autobots and Decepticons soon build up their forces, recruiting humans to become Junior Headmasters and Godmasters (Powermasters).

In 356 BC, Alexander the Great arrives in Greece with the ominous destiny that he will become the "destroyer of the world." Inheriting the crown, he becomes king of the Macedonians and starts down a road of conquest with terrific speed. Alexander ultimately confronts his fated nemesis, Darius the Third, in a war with Persia which changes Alexander into the devil he was fated to become, assuring the destruction of all in his path, and possibly himself.

A series of comedic shorts featuring chibi versions of the characters of the main show.

Afraid that his life may end at any moment, Otto Suwen begins writing a diary documenting all of his experiences. Now part of Subaru Natsuki's eccentric band of colorful characters, the apprehensive merchant is certain that new dangers lie ahead in their mission at Sanctuary. But amid the rising tensions, there are still moments of respite and reflection, ripe with opportunities to make vivid memories.