In space a spaceship was seen flying through space as it then approaches Mobius.

S-O-N-I-C GO!
S-O-N-I-C GO!
GO GO GO GO LET'S GO!!

The spaceship exploded, but an escape pod was seen flying away from the explosion and made its way to the planet and it landed. The door opened, revealing a young human baby and many anthromorphic shadows approaching the shuttle. The baby opened his eyes and looked around him.

Whenever I think of all the rules
All I can think of is to cut loose
This is today, that was yesterday

The human Y/N is now seen grown up as he was standing on a hill in Green Hills, looking at the sunset with a serious expression as his jacket flowed with the wind.

I gotta keep on a steady speed
There is no other philosophy
I'm running wild, this is my own style

Y/N looks down to see a blue blue and smiled as he could see Sonic run by and Sonic looked up to him and smiled.

Gotta go at my own pace
Faster I'm going faster
The rhythm within me, keeps me steady
Running along the wind
There is nothing that feels more free

Y/N was now seen with a yellow two-tailed fox Tails as he held his hand out to him to help him up, Sonic was seen battling with a red echidna Knuckles, and another human named Dr. Eggman was seen with the Chaos Emeralds and laughed evilly as his robot army stood behind him.

Inside Outside take it down
It's time go time speed of sound
Never backing down
Won't let anyone get ahead of me
I will always be in the lead

Y/N, Sonic, and their many friends stood their ground as the robot army charged at them. Sonic looked to Y/N and nodded as Y/N flew away, letting everyone else battle the army. They charge and clash.

Inside Outside GO! SONIC!!
It's time go time Yes Sonic!
Gotta do it right now
Have a nice day now
Never stop
Gotta keep up the pace
Clutch it out never losing face

Y/N flew ahead and confronted Eggman as Eggman got into his giant mech and Y/N powered up his green aura and his eyes glew green.

Don't sit around, time will slip away
Run on towards a brand new day

Green lightning surrounded his aura as he got in position to fight and so did Eggman.

S-O-N-I-C GO!
S-O-N-I-C GO!
GO GO GO GO LET'S GO!!

Y/N and Eggman charge at each other and clashed fists, giving way to the main title of the series.

SONIC THE HEDGEHOG X: The Legend of Y/N