It was a head-over-heels grocery store meet-cute for Iris (Sophie Thatcher) and Josh (Jack Quaid), and it wasn't long before she was joining him for a getaway at the lake house of his well-off acquaintance Sergey (Rupert Friend). In stunning fashion, it becomes apparent that not all is as it seems with Sergey-or with the retreat itself-or, for that matter... with Iris.