When a creature called Sokar appears on Equestria with his brother, the princesses and the mane six must prepare for the worst, or... the best? One thing is known, corruption will affect the princesses and their friends one way or another and they will succumb to it and they will be turned to darkness but it will be for good? Sometimes corruption isn't bad after all.

Contains: corruption, transformation, muscle growth, goo, macro, dark magic transformation

(English is not my first language, so expect grammar mistakes. You have been warned.)