The main character of the movie Orcus is Father James, a former Catholic priest who lost his faith and became disillusioned with the church. He has a sense of detachment from the world and has been contemplating suicide until he meets a mysterious woman named Maria. Maria claims to have a dark secret that threatens the religious institution and convinces Father James to recruit a team of criminals to rob a wealthy church and kidnap her.
The team consists of professional thieves, including a former marine, a drug addict, a criminal mastermind, and a skilled hacker. Father James sees this as his means of redemption from his past misdeeds and decides to lead the group. The heist does not go as planned, and the team has to overcome many obstacles, including a rival gang and a corrupt priest.
Maria reveals that she carries the blood of an ancient demon known as Orcus, who can be summoned and controlled by the person who possesses the blood. The church has known about Maria's existence and has been trying to keep her hidden from the public, fearing that the demon might wreak havoc if summoned.
As the team struggles to escape with Maria, they realize that Orcus has awakened within her, and they are running out of time to prevent disaster. The movie culminates in a chilling finale where Orcus's true power is unleashed, leaving the audience questioning who the real villain is.
