Ten years after the world first glimpsed the mysterious disappearances off Jeju’s southern coast, Killer Island Z resurfaces—this time with bloodier truths and deeper betrayals. Lee Soo-hyun (Park Seo-joon), a hardened detective turned recluse, is reluctantly pulled back into the fray when a viral livestream reveals gruesome killings on the supposedly abandoned Jukdo Island. Haunted by his brother’s unsolved murder on that very island, Soo-hyun joins a covert task force to uncover what lies beneath the island’s cursed legend.
Among the recruits is Jung Min-ah (Han So-hee), a fearless profiler with ties to a biotech scandal that traces back to the island’s past. As they unravel the mystery, they encounter a generation of teens raised in isolation—trained to kill, and convinced the mainland has abandoned them. What begins as a rescue turns into a survival game as loyalties blur, the dead don’t stay dead, and the island’s secrets fight to stay buried.
Blending high-stakes action, psychological horror, and dystopian social commentary, Killer Island Z explores the scars of abandonment, the price of truth, and the lengths people go to for redemption. With slick cinematography, gut-wrenching twists, and a soundtrack that pulses with tension, this sequel is more than just a thriller—it’s a reckoning.
