The Christmas vacation of a teenage girl and her family turns into a nightmare when they discover the ancient threat that haunts the island where they are.

Haunted by visions after her sister vanished with her classmates 21 years before, Astrid begins an investigation that uncovers the dark, eerie truth.

Rie is a PR-coordinator visiting a tunnel boring machine to portray the well-oiled European cooperation in the Metro construction when an accident suddenly occurs. Unable to escape, she takes refuge…