An empty place. A white spatial/special page. Darkness around us. Let's play! Let's start running around! Let's leave a trace. Lines, forms, directions, words, screams and lights. We can mark our territory. We can underline our presence. We can design a ephemeral castle. In emptiness. Let's play. A pure spectacle. Then, suddently the lights will disappear. Darkness will prevail. But still, we can keep playing.