An Ambush is done by the Crustaceans to eliminate the Astralborgs so they can get at the three puny Beetleborgs.

The 8 Astral Coins are at last reunited with the Astral Sword, leading to the summoning of the giant robot beetle fighting creature, Roboborg! But whose side will he be on?

Nukus and Vilor get an upgrade, going Mega powered. To even things up, the Beetleborgs are given a power-boost by Roboborg, fusing their old powers with their Metallix ones, creating the Mega Spectra Beetleborgs! But will this added armor be enough to stop Mega-Nukus?

Dr. Baron Von Frankenbeans' latest creation, a mutant plant, is sought by Mega-Nukus' forces.

The Beetleborgs make one last play to gain control of Boron.