Angelic Martínou, a young woman, wakes up at a deserted train station. The landscape seems completely unfamiliar to her. She doesn't know how she ended up there, while the ignorance of her past increases her discomfort. The freezing air, the darkness, and the beasts make her position even more difficult. When a pack of wolves smells her fear and approaches dangerously, the Night Train, like a godsend, stops at the deserted platform and invites her to board. The journey to the Unknown has just begun... Quickly, she realizes that she is not alone in this adventure. Two women and three men meet in the same carriage, having the same confusion. However, each of them seems to hide deadly secrets. The Night Train accelerates dangerously and heads towards derailment... only that on this train, nothing is as it seems...