An unidentifiable virus breaks out at a college, forcing professor Anya Davis to conduct her seminar online. After a tragedy happens in the class, a battle of ethics begins between Anya and the institution.

In a sun-soaked Hawaiian town with a mysterious past, a group of friends is left with a dark secret after a tragic accident. One year later, a member of the group receives a threatening message, and the friends now know that someone intends to make them pay for last summer.

Therapist Jean Holloway develops dangerous and intimate relationships with the people in her patients' lives in this simmering psychological thriller.