On a steamy summer night at the Greek seaside, full of music, dancing and taverna food, suddenly a sudden mist descends and strange creatures plague the city, attacking people and drawing others into the sea with strange dreams. A group of musicians join forces with a lost sailor in search of his wayward Greek father, along with a waitress, a bodybuilder, their granny, some local criminals, and an undead priest - banding together to fight back against the otherworldly invaders.

Street photographer Lora Dupuis ignores her friend Cam's warnings and finds herself hunted by a dark and evil shadow-spirit. Despite strange occurrences, she remains skeptical until it's too late.

Upon failing to show proper respects at the edge of a mysterious marsh, two young men pay a horrific price for their encroachment, when a restless entity makes its displeasure known.