RJ Spencer is a lucky 12 year old. He lives in the big city and his parents are landlords of the high-rise apartment building that is his home.
The many tenants in the building, along with the endless possibilities of adventures in the city itself, are the perfect setting for the young detective as he sets out to solve every case he can get his hands on.
Something crazy and loud is keeping RJ and Joey awake at night. Armed with their flashlights and a lot of courage, they vow to get to the bottom of it once and for all as they make their way to the roof one dark night.