Seymour Krelborn works at Mushnik's Flower Shop as a floor sweeper and arranges the flower pots. He is shy and clumsy. His boss Mr. Mushnik yells at him whenever Seymour makes a mistake and refuses to pay him. But when a solar eclipse happened, Seymour discovers an unknown carnivorous plant he named Audrey II. It may be the key to his freedom and winning the heart of his love interest Audrey.