The most beautiful homes hide the ugliest secrets. When real estate agent Katie returns to the abandoned Hehl Mansion to prepare it for sale, she discovers her childhood friend's family never actually left during the pandemic-and neither will she. As Katie and later a renovation crew find themselves trapped inside the decaying mansion, they face a horrifying truth: someone-or something-lurks within its walls, wearing a cracked porcelain mask and turning trespassers into macabre art. With each gruesome death, the survivors realize that Mimi Hehl has created her own twisted family inside the mansion, and she's eager for new additions. In a house where doors lock from both sides and windows are barred like a prison, your only escape might be death itself.