William has lost both his parents in a tragic accident. To get away from everything and rest, he travels to Cannes. During his stay, he falls in love with an aspiring fashion designer, Sophie, who works extra as a waitress at his favorite restaurant.
One morning he rescues a young girl from drowning in the ocean. The girl’s father is a wealthy businessman named Simon, who invites William and Sophie to a big party in his hillside mansion. Simon surprises William by offering him a job and a place to stay as thank you for saving his daughter.
What first seems to be a decadent stay, full of luxury and abundance, quickly turns into a chaotic nightmare. Several people around Simon are attacked by a stranger in what seems to be acts of insanity. As William learns more about the events, he discovers unimaginable secrets about Simon’s past.