After years of putting up with Error's destructive, hostile tendencies, Ink thought he finally found a solution that would make everyone happy- even the destroyer himself! Since the grouchy skeleton thought of everyone as his enemies, they needed to become his friends. However, the artist did not intend to do that the old fashion way. He enlisted the aid of Sci to edit Error's code. Specifically, the part that made him hostile toward anyone other than himself.

It should have worked. The keyword being "should."

Instead of making the destroyer more friendly and less murder-y, the unsanctioned editing to his code caused him to go crazy in a manner none of his enemies or allies had seen before. He was attack anything and everything - including his associates and the few he considered friends - and tore through any AUs that stood in his way; Starting with a particular Underswap.

Now the self-proclaimed good and evil sanses needed to team up to get their chocolate-loving glitch back.

The only problem: No one knew if the damage done could be reversed. Or if Error would be the same afterward.