Norman Bates returns to his motel, a month after the events of Psycho II, where he encounters three new individuals. Among them is a stunning young nun, whose growing connection with Norman sparks jealousy from his "Mother." Norman also hires a young job seeker to manage the motel. Meanwhile, a curious reporter is investigating Norman's past.

Psycho III
A mysterious nun's arrival at the Bates Motel sparks a romance with Norman Bates, but their love is threatened by the dark secrets beneath the motel's surface, as a drifter and reporter uncover the sinister truth.