Rarity, Applejack, Sweetie Belle, and Apple Bloom were on the train towards their holiday destination. But said trip had to be cancelled. Now they're on a remote island while Equestria is threatened unknown beings.
A troubled young man wakes up as a pony in an unfamiliar world founded on that which he deems himself incompatible: friendship. Luckily, he encounters a lavender pony and her friends tasked with solving his “friendship problem”.