Pasha (Ivan Yankovskiy) has regular nightmares about an underground world full of monsters and demons. When he sees a girl from his dreams on the street he follows her only to walk into the world of his nightmares. He is introduced to a world of vampires, witches and werewolves and the secret society of Guardians that protect mankind from them. When he discovers the demon world is planning to take over ours he teams up with the Night Watchmen on a mission to save the world. Pasha is about to discover that nightmares can be very real!