After surviving a shark attack, homicide detectives Dan Cooper and Zoe Rawlings join forces to hunt the ultimate predator - a serial killer who is also hunting them. Not only are they survivors but also ex-lovers. Exceptional at what they do, together they're a force like no other. Zoe is happy in a new relationship, but after three years away Dan knows Zoe was the one he let go and wants her back. Will Dan and Zoe be able to work together to hunt down the serial killer or will they become the killer's next victims?