5 years after sonic project xt3me,t knuckles gets tricked by eggman and gets robotized.And the first boss of s4 ep II destroyed the city.meanwhile,sonic finds shadow and says the city and earth is in danger.sonic finds a chaos emerald and saves the city, but then sonic tries to infiltrate Eggman's E.G.G Factory, but fails and when he's close to being robotized, tails hacks the egg factory but turns into the death egg. colliding with little planet and capturing it once again, our heroes escape and go into a E.G.G-scape pod, it cuts to a post credit scene of amy being trapped in the death egg mk II
