At midnight, Su Du is dragged into a bizarre space. Endless darkness surrounds him, and a low murmur of rules whispers in his ears: "The Observer is watching." "Liars will be devoured." "Find your shadow to escape." He watches with his own eyes as the previous player glances out the window at a pair of eyes, then twists and vanishes like a crumpled ball of paper. On the brink of despair, he discovers he can "see" the loopholes hidden in the rules. Between the eerie lines of text is a tiny message, almost impossible to make out... Can he survive until dawn? And the "Observer" watching him from the darkness, is it an NPC or another trapped soul?