An unfortunate turn of events finds Spike changed into an Earth pony. Rarity unintentionally crushed his heart and now she has to fight hard to win back his trust, his friendship, and maybe something more.

The story continues with Curse of the Werepony 2

Don't know what the heck is going on? Then start to story right by going all the way back to the beginning with And Tootsie Flute Makes Three