暗礁狂鲨潜伏海底，犀利目光扫视猎物，千钧一发，暴风掠食。我忘了自己自杀的理由

　　After her sister's murder, Nic, her younger sister and two friends seek solace through a Pacific island kayaking adventure. Hours into the trip the women are stalked by a shark and must band together, face their fears and save each other.