Temporarily mutated by the wild energies of the Jungle Planet Cyber Planet Key, Optimus Prime continues his battle to defend the universe from Megatron among the giant trees of the Jungle Planet's rainforest. Swinging from tree to tree, he moves silently through the dim half-light of the dense mid-canopy foliage. he knows that his enemy lurks somewhat in the humid valleys of his chaotic world, and will stop at nothing to find Megatron and stop him once and for all.