Sherlock, John, and the Doctor

When Mycroft contacts Sherlock and John to investigate an alien known as the Doctor, it's the chance of a lifetime for them to discover strange new worlds, explore the past, and fall in love. As for the 9th Doctor meeting Rose, John, and Sherlock, he gets more than he bargained for. (Series/Season 1 for both shows. Johnlock, Doctor/Rose, surprises/canon change in store.)