在一場血腥的鯊魚襲擊後，她失去了父親與妹妹，自此之後便生活在醒不來的惡夢之中 。在心理醫生的輔導下，她得以深入回顧埋藏在記憶中的痛苦記憶，並逐漸揭開那個撕心裂肺的真相……

A group of lonely hearts are catfished by an online man. They are individually enticed to come to his Scottish castle for a romantic weekend. Once there, they find themselves trapped and forced to play an ancient game called Simon Says to the death.