In a battle between good and evil, mystery favors evil.
A long-buried mystery lies deep inside Lone Island. Its tentacles have reached modern-day society, leaving behind a trail of missing people.
Rhea and the National Detective Agency are tasked with solving this perplexing case and shedding light on the underlying threat.
As the team unravels the clues, they expose a supernatural connection that shakes them to their core and upends their investigation.