The clouds move through the sky. The image moves downward, little by little revealing the city of Vale.

Dozens of people walked through the streets. The Vytal Festival had brought many from across the kingdoms to the city, making it more crowded than usual.

All in all, everything seemed peaceful.

Metalex presents…

Suddenly, small cracks starting forming in the ground at multiple locations throughout the city. Those cracks turned into small chasms, and the creatures of Grimm emerged from them.

Chaos and panic started to ensue. The once calm people were now running around frantically, trying to escape from the monsters.

Sonic Adventure RX

More chasms started forming, and more creatures of Grimm came out from them. The walls around the city were being torn down by Deathstalkers and King Taijitu.

Based off of…

Explosions started occurring in different places in the city. Pieces of buildings started falling to the ground.

SEGA's Sonic the Hedgehog

At the center of the city, a robot tore a crater in the ground. It looked upon the chaos, feeling a sense of accomplishment.

Rooster Teeth's RWBY

And at machine's orange energy cores, was power equal to that of all seven Chaos Emeralds combined.

Gotta open your heart!

The scene quickly changes to the Emerald Forest. Something is running through, passing trees at a speed faster than the eye can detect.

No ownership claimed over characters

Flashes of scenes appear one after the other. A fist wearing a yellow gauntlet punches a leg wearing a pair of black pants. The bay doors at Eggman Land open up to reveal a massive ship, slowly rising upward.

The scene flashes back to the speedy figure. A top view is visible, showing off his blue body and sharp quills. The figure slows down a little, allowing a second figure to catch up. This person has crimson hair, a red cloak, and a piece of metal strapped to her back.

The image switches between a side view of the figures running and a mountain top being destroyed by something trying to break out. After a few seconds, the scene flashes white, and shows a first person perspective of the figures zooming through Mountain Glenn.

~Can't hold on much longer~

~But I will never let go!~

Back in Vale, two figures fly close to the ground in a bi-plane. The pilot is a two-tailed fox, firing at the Grimm with the plane's weapons, while the passenger is a girl in a white skirt summoning glyphs.

Miles 'Tails' Prowler and Weiss Schnee.

~I know it's a one way track~

~Tell me now how long this will last!~

On the ground, in another section of the city, two figures are attacking the Grimm head-on. The first is a red echidna with sharp knuckles, while the other is a blond girl wearing shotgun gauntlets.

Knuckles the Echidna and Yang Xiao Long.

~I'm not gonna think this way~

~Nor will I count on others!~

The scene changes to show a view of Beacon Academy. Missiles are heading towards the main building from a large airship. A white hedgehog on the ground puts out his hand, causing them to freeze in midair. A girl wearing white and black fires rounds at the missiles, while a black hedgehog with red accents throws energy spears. Both cause the missiles to explode.

Silver the Hedgehog, Shadow the Hedgehog, and Blake Belladonna.

~Close my eyes and feel it burn~

~Now I see what I've gotta do!~

On top of the massive airship, eight figures stood at the bridge, overlooking the incident in Vale.

Metallix, Dr. Ivo 'Eggman' Robotnik, Roman Torchwick, Cinder Fall, Mercury Black, Emerald Sustrai, Neopolitan, and Adam Taurus.

~Open your heart, it's gonna be alright!~

The two figures from the forest rushed into the city. The blue hedgehog boosted right through a horde of Beowolves, while the girl turned the piece of metal into a scythe and started slashing at Grimm.

Sonic the Hedgehog and Ruby Rose.

The scene quickly changes to the Breach. The nine heroes are on side in fighting stances with weapons drawn. The eight villains are standing opposite to them doing the same, while Eggman was in the pilot seat of a combat mech.

~Open your heart~

Sonic and Ruby glance at each other, putting grins on their faces. Shortly after, the two sides begin charging at each other.

Before the start of the clash is shown, the scene quickly goes black, showing the tower at Beacon in ruin with a white light shining from the top.