The world is threatened by Mephisto, the King of Minor Land, who tries to spread the Melody of Unhappiness. Mephisto is after the Legendary Score, in which the Melody of Happiness is written. In order to complete the score and protect the world, new Precure girls stand up to collect the scattered notes of the Melody of Happiness.
(source: Mangaupdates)

Love Momozono is a 14-year-old student at Yotsuba Junior Highschool that tends to care more for others than for herself. One day she visits a show of the famous dance unit "Trinity" and decides to become a dancer, too. On the same event, subordinates of the Labyrinth Kingdom show up who want to collect the unhappiness of the audience. Love gets the power to change into Cure Peach and fights them. Soon after, she is joined by her good friends Miki, who is Cure Berry, and Inori, who becomes Cure Pine.

It's Kyoto, and yet it is not.
A microcosm of peculiar origins, "Mirror Kyoto".
A small incident causes a young girl, Koto, to wander into this world.
She runs into a mysterious monk, gets chased around by a tech-obsessed girl, and heartily enjoys her chaotic and colorful new life, but meanwhile, out of sight, a certain plan is being set into motion…
In this mysterious city where spirits and humans have been thrown together, the festivities are about to begin!

Nagisa Misumi and Honoka Yukishiro couldn't be more different. Nagisa is sporty and Honoka bookish, and while they attend the same school, they have very little in common - until one day, a shower of shooting stars brings two very unlikely visitors into their lives: Mippuru and Meppuru, refugees from the Garden of Light, which has been conquered by Darkness. Endowed with new and startling powers, Nagisa and Honoka become Cure Black and Cure White, magical defenders of the light --- together, they are Pretty Cure. (Source: MangaUpdates)