The Maximals discover a new Beast Mode Maximal -- a bat named Nightscream -- and a mysterious fruit tree, neither of which should exist on the machine world of Cybertron.

Nightscream fights to retrieve Blackarachnia's stolen Spark. Meanwhile, Optimus is able to contact Rhinox's Spark, but Rhinox deals him a major surprise.

Megatron prepares a doomsday weapon that can wipe out everything organic on Cybertron -- including the Maximals. Meanwhile, Optimus discovers his own doomsday weapon...

Blackarachnia finally revives Silverbolt... but is he glad to be reawakened?

Having discovered the location of the missing Sparks, the Maximals race against time to stop Meagtron from achieving his ultimate Ascension.

Horribly outnumbered, the Maximals make their final stand in a desperate attempt to protect the Sparks.