Barbie is Kara - a princess with an ordinary life. Kissed by a butterfly that allows her to develop into a Super Sparkle and provides her superpowers, she's about to save the kingdom - becomes nemesis and her rival also were itn't because of her cousin who is also kissed by the butterfly. See as Super Sparkle and Dark Sparkle know once they know that the strength of friendship that they could develop into a team once and for all.