A sprawling, decrepit mansion designed by obsessive toymaker Henry Stauf becomes the stage for a supernatural mystery as the player awakens within its walls with fragmented memories. Years have passed since the house fell silent following a tragedy involving six visitors and the mysterious deaths of children, leaving the structure to decay into a haunted shell. Now trapped in the labyrinth of rooms, the protagonist must piece together what happened during that fateful gathering while confronting the malevolent forces that still linger in the halls. Solving puzzles and uncovering clues across the mansion offers the only path to understanding the truth behind the tragedy and discovering the identity and role of the enigmatic seventh guest whose presence shaped the home's dark history.