Ten strangers have arrived on Devil Island, a tropical paradise, but they soon discover they've stumbled into a trap; as they sit down to their first dinner, a voice echoes through loudspeakers, calling every one of them a murderer.

Myriam, the housekeeper and Kelly's dog are dead, and the guests discover that their only source of drinking water was poisoned; looking for an escape, they find the body of the man who invited them to the island.

After finding Gilles dead, the remaining guests realize the murderer must be one of them; the hotel's bellboy is their prime suspect - until he dies; Victoria suspects Kelly; Kelly makes a secret pact with Eve.

Eve's lifeless body is found floating out at sea; their raft is deliberately destroyed; Xavier poisons himself while he's hunting for food; Victoria is so sure Kelly's the murderer that she tries to kill her.

Xavier dies; the survivors are at each other's throats more than ever; after discovering a CCTV control room, Victoria is savagely murdered; Malik is in love with Nina and wants to protect her, but it's growing clear no one will escape.

Kelly worries she's being ganged up against; Nina is suspicious of Malik; wracked with doubt and fear, the last three survivors are almost losing their minds.