A sitcom scriptwriter, who's suffering from writer's block, discovers that his house plant has miraculously gained sentience and a funny bone after being left in front of a TV while old sitcoms were playing. The plant ghostwrites for him.

Frantic to deliver a hit musical, conniving Broadway composer Jo-Jo Gillespie contacts the spirit of George Gershwin through psychic Sister Teresa, and makes marvelous music from beyond the grave. When some begin to suspect that his new music isn't actually his, Jo-Jo stops at nothing, even murder, to protect his secret and his downfall begins.