All technological systems exist to perform something, and can be described with four major functions of technological systems: Transform, transport, store and control. This film is about the function of storing materials, energy and information. You will learn that storing in the past was much about storing food so that the harvest would keep through the winter without going off. Nowadays there is a growing need for storing energy and information. The film describes different ways of storing either materials, energy or information, to enable us to use it when it is needed.