Princess Black; an evil villainess who once ruled the Ribbon Kingdom when she was good, known as Princess Blanc. Her loyal advisor, a small fairy by the name of Mochi must use to power of the Ribbon Tree to find the legendary warriors in order to save her homeland since it's protectors Cures Guardian and Sunrise have been captured. So Mochi must use her powers to awaken the warriors of legend, known as the Standing Up Pretty Cure!