When a mass gaming craze hits Equestria, everypony rushes to get in on it. Apparently a new company known as C. C. Corp releases a game known simply as "The World". It gets a good reception, and soon is a thriving franchise. But after a while, The World became less peaceful, as more and more ponies began to take to "PK'ing". Though it is somewhat managed by the admins, it leads to a secondary action called "PKK'ing".

Twilight Sparkle, who was immune to the gaming fad longer than most due to her love of books. But when all her friends ask her to join, she can't refuse. As soon as she begins playing, she meets with two others, who will forever change how she plays the game.

Twilight becomes a famous PKK known simply as "The Terror of Friendship," and actively seeks weak players to protect. But when one of her friends falls into a coma, she turns all her attention to seeking out the perpetrator, a PK who apparently goes by "Tri-Edge". But after finding and taking on the player Twilight assumes is Tri-Edge, she is beaten, and returned to a level 1 player. What happened during Twilight's battle? Who is this mysterious player? Why are more and more ponies falling into comas?

A .hack// Crossover