WELCOME TO SONIC GENERATIONS!

Classic Sonic is running through Green Hill until he hears a noise and senses a brief earthquake, a mysterious entity known as the Time Eater appears in the sky and everything whites out. In the present day, Tails arrives at a gathering that is attended by his friends. Arriving soon after, Modern Sonic discovers that his friends have been preparing a surprise birthday party for him and Sonic celebrates his birthday with his friends until the Time Eater disrupts the party by sucking everyone through various Time Holes and scattering them across time and space. Later, Sonic finds himself in a strange dimension known as White Space. Noticing a colorless portion of Green Hill and Tails as well as his friends as colorless statues nearby.

Sonic: What on earth is this place?