Sonic Universe: The Metarex Saga (Part 3 of 4)
"A Dark Awakening"
"Dark Oak has somehow found New Mobotropolis! And if that isn't bad enough, Tails has apparently gone rogue, escaping with Cosmo and Chopper, leaving the Freedom Fighters behind to fend for themselves! But is Mobotropolis OR Mobius Dark Oak's target? Just what vendetta does he have against Cosmo anyway?"