Dome Sweet Dome Sonic manages to escape from Alpha Grim Birdie and its minions before re-entering New Yoke to find backup. As Sonic is further pursued by Grim Birdie and attempts to evade Nine, who manipulates the Shatterspace to endanger civilians so he can tire himself out rescuing them, Rebel, Renegade, and the other Shatterspace variants come together to fight by his side. With help from the Chaos Council, Sonic and his allies disable the Grimions, forcing Alpha Grim Birdie to retreat...