Carrie Abot is a borrower. She lives a simple borrower life in an apartment complex. She borrows from the kitchens of the staff and has so many places to go under the walls and floorboards, that there are many undiscovered places. There is one place were no one ever seems to stay and that is where most of her house is. One day, however, a man in a light brown trench coat appears, and Carrie worries her life may be in danger.

John Watson is a proud and lonely borrower that resides behind the walls of 221B Baker Street. His life is a peaceful and secretive one, that is until Sherlock Holmes moves into the flat, and threatens Johns entire existence.