Rebecca Valentine. One of many teenager who is part of the S4 league. (Which is short for Stylish Esper Shooting Sports.) While playing a friendly game of Chaser with some of her friends, some weird glitch happened during the game that when she was killed by a mysterious online player, she happened to respawn in somewhere entirely different then the map she was playing on. Will our S4 league player be able to survive in this mysterious world?

(MLP x S4 League Crossover)