Ghaib is a Malaysian supernatural horror mystery series following four college students who enter an abandoned cave to summon spirits. When a terrifying ghost named Mona appears, one student mysteriously vanishes. Detectives Reza and Anita investigate the disappearance while confronting unexplained paranormal events, buried secrets and mounting fear within the college community. Adapted from the novel Projek Seram Terowong, the series explores supernatural terror and skepticism.