A mother and father receive a disturbing letter from their daughter who is away at college. Through a series of confessions, each one more shocking than the next, they learn her life has snowballed completely out of control.

当一个年轻漂亮的有影响力的人在一次神秘的鲨鱼袭击中幸存下来时，她变成了一个可怕的顶级掠食者，在阳光明媚的加州威尼斯海滩狩猎和觅食。