Abstract: The storage system includes multiple cabinets within an enclosure mounted in a bed of a truck, such as a pickup truck bed. The cabinets each include rear walls which are hinged together at rear corners thereof to allow the cabinets to pivot relative to each other. An innermost one of a series of cabinets is slidably mounted within the enclosure so that it can slide into and out of the enclosure along with the other cabinets hinged thereto. Each cabinet has doors which can be selectively opened to allow for access into an interior of the cabinets. The cabinets have a storage position where they are contained within the enclosure and a deployed position where they are slid out of the enclosure and pivoted to provide easy access to contents of the cabinets outside of the truck bed.