On an ordinary Finnish ferry, two vampires roll aboard in a worn-out camper van. During the night at sea, contact with land is suddenly lost. The journey turns into a terrifying journey where your best friend can become an enemy, and where enemies are forced to cooperate to survive.

The vampire infection spreads when Walter turns Dan into a thinking vampire, who quickly becomes fascinated by his new abilities. Albin and Lo pursue Edith after seeing her attack another passenger. Pia realizes that something truly terrifying is happening right before their eyes and is forced to act in a way she didn't think she was capable of. Marianne, Göran and Vincent barricade themselves inside a club as panic spreads on the ship.