Jade, who fell into a rule-based horror game instance, accidentally forms a Shared Sensation Pact with Jude, the SSS-rank zombie boss. The two share all damage and are bound by life and death. The zombie king, who was supposed to hunt players, is easily tamed by Spicy Gluten Strips. The dangerous Crimson Moon Castle and eerie Ten Miles Wedding Procession instances appear one after another, with deadly rules closing in constantly. Jade solves puzzles and clears levels while feeding the arrogant zombie king. The human and the zombie fight side by side against powerful foes, surviving and rising against all odds in the dangerous horror world.