This story is a sequel to The Revenge of Tirek

Somehow, Skull's evil father, Nucor, has risen from the depths of H.F.I.L., and brought with him a terrifyingly evil zombie army, and the worst part? It's on the day that Twilight's gonna get married to Flash. Tails, meanwhile, continues to fight off his feelings of jealousy, and he & Flash begin a rivalry.

However, Nucor has managed to revive Tails' yandere/psycho bitch stalker, Cosmos, but in Volucris' body. Luckily, Tails and T.J. have a new power on their side: the Fusion!!