[Book 1] When Y/N L/N moves to London to escape her previous live, she loses everyone and everything. She moves onto the same road as famous detective Sherlock Holmes and Dr. John Watson, but she doesn't know who they are until an acquaintance tells her. When Y/N meets Sherlock, it seems she has a new friend, until she discovers he hates her. They are forced to work together when they fall into a difficult situation and must make there way back to London. Then everything changes.