Camille arrives in Ouessant, the island of her birth off the Brittany coast, to sell the family home. She spends a last night in the house during which she discovers a secret. In 1963 a man came to work with her father, who was the Jument lighthouse operator. He only stayed two months, but his presence proved to be a disturbing catalyst.

In the future, the Japanese government captures a class of ninth-grade students and forces them to kill each other under the revolutionary "Battle Royale" act.

On the run and in search of help, two wounded gangsters find refuge in the secluded castle of a feeble man and his wife; however, under the point of a gun, nothing is what it seems.

Ten strangers are summoned to a remote island and while they are waiting for the mysterious host to appear, a recording levels serious accusations at each of the guests. Soon they start being murdered, one by one. As the survivors try to keep their wits, they reach a disturbing conclusion: one of them must be the killer.

Mute Hee-Jin is working as a clerk in a fishing resort in the Korean wilderness; selling baits, food and occasionally her body to the fishing tourists. One day she falls in love with Hyun-Shik, who is on the run from the police, and rescues him with a fish hook when he tries to commit suicide.