影片讲述芭比扮演一个喜欢看漫画书的年轻女孩Alex。但她的生活比不如意，所以她希望成为一名像漫画书中的超级英雄。经过一番努力，她的愿望终于实现了，如愿地成为了现实生活中的一名超级女英雄。也因此她经常会被追捕，为此，她需要拯救自己和自己的国家。其实她从一开始她便是一名超级英雄了……One day, after being kissed by a magical butterfly, Kara soon discovers she has amazing super powers allowing her to transform into Super Sparkle, her secret, crime-fighting alter ego who flies around the kingdom ready to save the day! But it's not long before her jealous cousin catches the butterfly and also transforms - this time into Dark Sparkle, her nemesis.