Little Shop of Horrors (1986)

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 as Seymour is seeking a new mysterious plant, he 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.