After assisting in the murder of her abusive husband and successfully covering it up as a COVID-19 death, Isabelle's guilty conscience haunts her when her mother-in-law reveals knowledge of their dark secret. As Isabelle's paranoia grows, she seeks solace in her manipulative friend Simone, but a series of terrifying events unravel a twisted web of deceit, leading Isabelle to a deadly confrontation with her past.