Ep. 21: Boom! The PreCure of Miracle is Born!!

21

Mephisto invades Kanon Town and sets up a stage to perform the Melody of Sorrow. Aphrodite talks to Hibiki and Kanade, asking them to believe in Hummy. As Mephisto tortures Hummy with the Melody of Sorrow, Siren turns against him and tries to free the Notes, but Mephisto turns them into a Negatone. Hummy manages to free herself and the Fairy Tones, allowing the girls to transform. (Source: Wikipedia)