A true story of Florence Foster Jenkins, the worst singer in the world, whose one great love in this life is music, despite the fact that she has neither a musical ear and a sense of rhythm, nor a trained singing voice. She hires the young pianist

Cosme McMoon, learns countless soprano arias from famous operas and gives concerts for a crowd keen to amuse themselves at the expense of a delusional madam who imagens herself to be an artist. The final concert by Jenkins took place in 1944, at Carnegie Hall, in front of three thousand listeners. Incredibly, recordings by Florence Foster Jenkins are still available in shops throughout Europe and elsewhere in the world.