A young girl was brutally murdered, and her body was discovered by someone. The authorities assign detective Gustav Johren to solve the case and find the killer.. What appears to be another murder case for the veteran detective, it twists into a desperate fight for survival as he faces supernatural threats. To close this case, he forges an uneasy alliance with the mysterious Ansem, an antiques seller, that seems to know more about the strange occurrences in the city than he leads on.
In 2027, an island shrouded in blood-red fog emerged from the Pacific—Gehenna, a forbidden land where no one returns. Billionaire ex-soldier Gustav Fernandez, feared as the ruthless leader of a deadly militia, has a single goal: saving his dying daughter. Believing Gehenna holds the cure, Gustav assembles his family of elite soldiers to brave the horrors of the unknown. Armed with superhuman abilities from a demonic fish caught near the island, he leads his team into a realm of ancient secrets, mythical beasts, and deadly schemes. But in Gehenna, survival is a battle—and salvation comes at a cost.