Two weird technicians, KEYMASTER and GATEKEEPER, walk undisturbed through the spaces of a large office building, newly completed but still uninhabited. Undisturbed they install large blue screens on different floors and in different rooms, without speaking to each other. Having completed their work, the two look at each other and, after a gesture of understanding, the GATEKEEPER presses a special blue button: with a glitch, all the blue surfaces installed in the building are activated and turn into portals ready to be crossed...