In a chilling mansion, a group of heirs gathers to hear the will of their recently deceased relative, an eccentric millionaire. The atmosphere is tense, especially because the deceased had a peculiar obsession with the supernatural and madness. The will will reveal who inherits his vast fortune, but first, they must spend the night in the house, where shadows seem to come alive and the echoes of maddening laughter resonate through the darkness.
Among the heirs is a young woman named Paulina, who, though terrified, becomes the center of attention when she begins to receive mysterious letters related to the family's past insanities. As the night progresses, secrets start to come to light, and tension rises as one by one, the members of the group begin to disappear. The ghosts of the past manifest in the form of terrifying apparitions, and the line between sanity and madness blurs. Paulina must unravel the mystery that surrounds the mansion to discover who the true heir is and whether there are supernatural forces dragging her family into madness. In a cat-and-mouse game, the young woman will fight for her life and her legacy, as the atmosphere grows increasingly unsettling and surreal in a gripping game of deception and hidden truths.