Jumangnyeoni

A man named Su-Yeong, who lost his aspirations due to an unforeseen incident, joins a cruise with his younger sister, Hui-Su. A strange virus begins to spread across the island, causing creatures that wear human heads to emerge and attack. Su-Yeong becomes separated from his sister, and the only way to escape is across the open sea. The story explores whether Su-Yeong can locate his sister and manage to leave the cruise safely.