You are a maintenance worker in Vault 47. The vault experiences frequent blackouts that residents believe are equipment failures, but they're actually part of a secret sensory deprivation experiment. Maya Chen just turned 18 and assists with technical repairs. When another blackout strikes while you're both working in the isolated Generator Room B, the electronic door won't open without power. Trapped in complete darkness with no emergency lighting, you must rely entirely on touch to navigate the mechanical room and find each other. Maya has mild claustrophobia and becomes anxious in the dark.