That Halloween night in Little Surrey twelve years ago was a source of sadness and joy for the people of Avalon, a day where their nightmare was ended and a peaceful future awaited, though many were lost in the endeavor.

They were told that Peter Pettigrew betrayed his friends and led Voldemort to the Potters, that Lily killed Voldemort once and for all at the cost of her own life, and that Sirius Black died taking Peter to the reaper himself.

Even while fighting Little Surrey for custody of baby Harry, with his legal guardian believed dead and Petunia Dursley his closest living relative, no one considered that any part of this story could be a lie.

When the Potter Gym at Griflet's Hollow had been blown up, killing Fleamont and Euphemia Potter, and their Typhlosion sent overseas to escape capture, Team Nocturne began to hunt down James and Lily Potter in earnest.

With their baby in danger, the young couple had been forced to flee, leaving Remus and Moony to move from Potter family home to family home, mimicking their Pokemon to craft the illusion that they had not gone to Little Surrey.

Lily's brother and friends aided the ruse by sending out false information, trying to turn their attention away, though Dumbledore believed that Lord Voldemort would never go to the isolated island.

The Marauders, however, knew that the violent madman would not respect the isolationist treaty Little Surrey was made on, and so Sirius patrolled the shores in a boat with Peter, keeping an eye out for any Nocturne agents that might try to slip in unnoticed.

Sirius realized they had failed when James had called him that night, asking why Peter was watching the house in his Pokemagnus form, a Raticate.

The moment he tried to warn them, it was too late.

Peter had driven them to the dock as fast as he could, both sick with dread, and raced to the safe house only to find it destroyed and the Little Surrey police already combing through the wreckage.

Sirius had been overcome with sorrow and pain, but Peter spotted the Raticate trying to make an escape, and both Marauders took off after it.

The culprit separated from their Pokemon early in the chase, the lack of a Yamask marking them as a lowly grunt, and led the pair in a wild chase across the island for nearly an hour.

Despite the many near misses and lost trails, Sirius and Peter cornered their target on a cliff, where an old lighthouse sat over the sea.

When they spoke, a voice scrambler defeated any attempt at identifying gender, let alone identity, though their words were sinister.

"Such bold talk, Sirius. But then again, you always did shoot off your mouth."

But the grunt proved more cunning and dangerous than expected, their Rattata countering Padfoot the Houndour's Flamethrower with one of its own before sending out a Manectric that separated Sirius and Peter with a Thunder.

"I hope you like him, Sirius." The grunt stated coolly as the Discharge Pokemon went after Padfoot, forcing the smaller canine into retreat. "I got him just for you. I was originally hoping to become a Magnus with him, but when I felt the bonding tug from this Rattata, I knew it was too good an opportunity to pass up. Stupid James, he never thought for a moment that there could be another Raticate Pokemagnus, but I suppose he was just like you, failing to see my potential!"

The battle was fierce, Sirius and Padfoot battling Manectric while Peter took on the Rattata with his Darmanitan, forcing the grunt to handle two fronts.

"That's the problem with you and James, Sirius. You could never see beyond yourselves! You think you understand this world-"

A bolt of Thunder struck both Pokemon and humans, leaving them unable to move from the pain.

"You think you understand this world and your place in it, but your failure is that you looked past too many people, not realizing they were threats. Oh yes, Sirius, betraying you has been so easy, and so delightful."

Peter attempted to strike while the enemy was distracted, his Darmanitan nearly blasting the Rattata off the cliff with a Hyper Beam while Wormtail drew blood against Manectric with a Hyper Fang, though he fell from paralysis soon after.

"Well done, Pettigrew, well done. You managed to wound both my Pokemon. A valiant effort, and one worthy of applause. So many mock you and wonder how you ever became friends with James and Sirius here, but it's clear you're quite skilled. Sadly, with Padfoot and Wormtail paralyzed and your Darmanitan needing to recharge after that impressive attack, and dear Sirius here still recovering from his own injuries, there's nothing either of you can throw at me to stop this."

Manectric began to build up a horrific charge, overclocking its internal battery into an Overheat, and steam rose from blue-and-gold fur as rain began to fall.

But Sirius was unable to command his own limbs, unable to move, and fell into the eerie calm of a man accepting his death-

"NO!"

Peter tackled the Electric-type in a bid to save his friend, and went up in an inferno, screaming in agony as skin blackened with heat and blood boiled in cooking veins.

Manectric threw off the burden once done, and Sirius realized his friend was still alive, if barely, his last words etching into the Black's soul.

"Harry…He needs you…I'll tell James and Lily…"

Sirius let out an anguished scream, only falling silent when a blow struck him from behind.

Sirius awoke hours later with stitches in his head and all his belongings taken, tormented by the night's events and sedated into compliance, before realizing he inhabited a cell.

That's when Warden Phillip Yorrick had arrived, a bland man with sharp eyes, to inform him that Sevii Island would be his home for the next two decades for bringing Pokemon to Little Surrey and battling on their land.

Yorrick continued on to say that everyone involved in the Potters' murders were identified and taken care of, that there was no escaped perpetrator…

"The bodies of James, Lily and Harry Potter were found…"

And that no one survived.

At this thought, at the realization of his failure, Sirius was lost.