Black Lake is a tourist town located in the mountains of the United States that is famous for its strange natural phenomena. During the summer vacation, female college student Emma Lin planned to spend a beautiful summer in Black Lake Town. However, things went wrong and the beautiful holiday time was shattered by bloody killings... The elegant hotel owner, the handsome French guy in the bar, the shrewd and slippery real estate businessman, the gloomy town priest... Everyone is keeping a secret related to the survival of the town, a secret that has experienced nearly four hundred years of vicissitudes, a secret that is closely related to the outsider Emma...