Violet, a widowed mother on her first date in years, arrives at an upscale restaurant where she is relieved that her date, Henry, is more charming and handsome than she expected. But their chemistry begins to curdle as Violet begins being irritated and then terrorized by a series of anonymous drops to her phone. She is instructed to tell nobody and follow instructions or the hooded figure she sees on her home security cameras will kill Violet's young son and babysitting sister. Violet must do exactly as directed or everyone she loves will die. Her unseen tormentor's final directive? Kill Henry.