Summer and Adorabat are fighting more than ever, so of course they're parental figures blame one another for their parenting. So when they think they do a better job raising the other's kid. They swap the kids for three days. Summer goes with Mao Mao and Adorabat goes with the Sky pirates. Though after the three days, the girls are the complete opposite of themselves. Summer is a kind and wholehearted kid who dreams to be a hero. While Adorabat only desires to steal the Ruby Pure Heart and destroy Mao Mao. What the neck happened to them and how do they go back to normal?