在碧蓝的大海深处，暗礁狂鲨如幽灵般潜伏，令冒险者心生畏惧，难以靠近。优优邪恶全彩

　　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.