Crescendo is a superhero musical that follows Thalia Day an up-and-coming superhero who must learn to control her new powers. She can cause the people around her to sing and dance as if they are in a musical. After a confrontation from her rival Illusionaire, a mysterious man that can pantomime object into actually existing, she finds herself on the run from the authorities as a potential new supervillain. Now with the help of her best friend and sidekick, Mindy, she must choose if she should redeem her name, or if she should turn herself in.