While staying at an isolated island resort, James and Em are enjoying a perfect vacation of pristine beaches, exceptional staff, and soaking up the sun. But guided by the seductive and mysterious Gabi, they venture outside the resort grounds and find themselves in a culture filled with violence, hedonism, and untold horror.

When her best friend vanishes during a girls trip to Croatia, Beth races to figure out what happened. But each clue yields another unsettling deception.