Gone With The Wendigo

Attention! Not my work. Credit goes to the writer bellatemple archiveofourown.org

Sam and Dean go into the New Hampshire wilderness to investigate a new case: whole groups of hikers are getting trapped in freak blizzards and then encased in solid ice. When a blizzard hits them on the trail, they take shelter in a nearby cave for the night, only to awake to find themselves transformed into brightly colored ponies and trapped in a whole new world where zebras speak in rhyme, ponies run apple orchards, good times and positive thinking are encouraged, and friendship? Friendship is magic.