Sherlock is bitten by a mystery animal and Molly might have the answer to his problem, but it comes with a dangerous secret. Sherlock/Molly, slightly jealous Lestrade and annoying Mycroft (when isn't he)
Sherlock's speech to John that John never got to hear.
John wakes up from a coma to fine his life with Sherlock Holmes wasn't quite what he'd thought.
Iris is the niece of Sherlock Holmes but has a not to secret secret that is going to get her into a lot of trouble in the supernatural area
*edited* Centuries ago the princesses summoned Sherlock Holmes from London to find some missing ponies, he found them, but then he didn't go back to London, well not right away. He fell in love with Luna but just as things were getting good he was whizzed back to London, *time skip to present day* Luna has been kidnapped and the Ponies have to call upon Sherlock once more.