A long time ago, somepony wanted to conquer the lands of Equestria. His name? Arceus. He sent the one Pokemon he knew could conquer it: Kyurem. But, his plan backfired, and Kyurem fought to protect Equestria, rather than conquer it. But Kyurem failed, and was placed into a deep slumber.

Now, thousands of years later, Kyurem has reawakened, and must once again face the monster that threatened Equestria once more. There is only one problem: Kyurem doesn't remember anything, not even his own name. Thus, a race against time begins. Can Kyurem regain his memories in time, or will he fail to stop Equestria's greatest threat?