Chapter 1

After the kingdom of Arendelle is cast into eternal winter by the powerful Snow King Mycroft, his sprightly brother Sherlock teams up with a rough-hewn mountaineer named John and his trusty reindeer Mary to break the icy spell.

All characters and rights and such belong to Disney and BBC, I don't own any of this obviously.
Cover photo done by Emillu on tumblr http://emillu.tumblr.com/post/72260787229/sherlock-frozen-crossover-frozenlock-mycroft