As the player explores the sprawling, decaying building, they uncover secrets, puzzles, and disturbing relics of Dr. Grimm's experiments, where he was working to challenge the limits of nature through his scientific experiments. But his experiments led to disastrous results, as he unleashed evil forces that inhabited the house, making this place besieged by tragic memories and mysterious events. The house functions as a time trap, where the walls retell the stories of the victims who died inside due to Dr. Grimm's experiments.