In this adventure Barbie is Kara, a princess whose life has little to do with the story. She is a current princess, and therefore her life looks like we can have any of us.
One day a butterfly gives her a kiss, something that pleases her. It does not matter, but it does not take long to discover that the kiss has transformed her. It has given her super powers that transform her into Super Flash, a heroine who helps the most disadvantaged.
Her cousin finds out about everything and envy corrodes her. That is why he captures the butterfly to give it superpowers, becoming Dark Flash. Both become enemies because of envy.
As they engage in this absurd struggle, they discover that there is an enemy threatening the peace of the kingdom. Only if they unite will they succeed. Will they join the two?