The fates of an apparently random group of strangers who each come into contact with a mysterious figure who they believe possesses the power to grant any wish, in return for which they must carry out a task he assigns them.

Policewoman Anna Mari is forced to play a dangerous game with the title serial killer. If she loses, she witnesses the maniac's tortured victims having their throats cut in explicit close-up detail via webcam. She teams up with British cop John Brennan to find out the identity of the murderer.

After the assault of a young woman in their seaside town, a security expert and his family get caught in a powerful riptide of secrets and lies.