With the Paradox Prism in his hands, Nine begins building the Grim into his own personal paradise — unless Sonic and Shadow can convince him otherwise.

Sonic discovers a new ability that may be the key to defeating Nine. But Nine's endless army has only one purpose: to capture Sonic's energy.

Sonic races to No Place to save the pirates before their world collapses, but Nine still needs Sonic's energy to power the Paradox Prism.

Reality will cease to exist unless a selfless hero makes the ultimate sacrifice. But will it be enough to reverse the damage Nine caused to the universe?

To get help in the fight against Nine and his winged lackeys, Sonic heads to New Yoke and forms an allegiance with the very last people he ever expected.

Sonic must learn to give up some control if he's going to defeat Nine on the battlefield. The first step? Letting the team take over.

To beat the biggest bot on the battlefield and get one step closer to Nine, Sonic needs to move fast — and accept a little help from his friends.