Plagues are ravaging Thebes, and the blind fortune-teller Tieresias tells Oedipus, the King, that the gods are unhappy. The murder of the former king has gone unavenged, and Oedipus sets out to find the killer.
Seymour Krelborn is a nerdy orphan working at Mushnik's, a flower shop in urban Skid Row. He harbors a crush on fellow co-worker Audrey Fulquard, and is berated by Mr. Mushnik daily. One day Seymour finds a very mysterious unidentified plant which he calls Audrey II. The plant seems to have a craving for blood and soon begins to sing for his supper.