Nefarious Dr. Eggman tried to dominate the world once again, but his latest plan ended with the catastrophic aftermath, resulting in shattering the planet. Only thanks to mysterious powers and powerful water god the planet was spare of the worst – a complete annihilation.

However, this still led to many accidents, flooded cities, huge chunks of planet's surface floating in the sky, and spreading uneasiness among people.

Like that wasn't enough, Shadow the Hedgehog got his hands full with defending the planet from the second Black Arms' invasion. The race used to be led by a cruel alien named Black Doom who was killed by Shadow. That resulted in wiping most of the hive-mind controlled race.

Unbeknownst to him, there was another hive-mind of lesser level. The future of the man-eating race was now resting on Black Death's shoulders. He wanted nothing more than to avenge his master and restore the race to its previous glory. But for that, he needed a strong warrior capable of stopping Shadow and thus he created Eclipse the Darkling, the first one of his kind and sub-species of Black Arms.

Eclipse wasn't bound to hive-mind, having a chance to make his own decisions. He questioned Black Death's decision to kill Shadow, trying to convince him to convert his half-brother to their side. While this plan worked for a short time, it soon backfired, resulting in destructing of the remaining Black Arms aliens with the exception of Eclipse and unhatched eggs.

The alien escaped to shattered Mobius where some eggs hatched, bringing to the world another sub-species named Dark Arms. They were black wisps capable of granting to Eclipse various powers that aided him in a battle. It didn't take long for Shadow to encounter Eclipse for the second time, and the long fight ended in the draw with the aliens escaping once more.

However, what seemed like a problem of the present had consequences in the future of the Mobius. The energy and chaos powers were disrupted, resulting in forming of Genesis Portals that created gateways to different dimensions. If they would be left unattended, it could result in a collapse of many worlds, not just planets.

The only one capable of traveling thought and closing them is Silver the Hedgehog, a citizen from the future. He wasn't happy to do so, but there was no other way, so he set out on the road that took him to many strange worlds.

Note: This story is happening after Dark Trilogy published in Sonic Universe under Archie.