Barbie and her little sister Chelsea travel through the whimsical worlds of Dreamtopia. Through the eyes of Chelsea's imagination, viewers explore delicious and delightful worlds and meet colorful characters who live there.

Legend says at the end of the rainbow, there's a pot of gold. But the truth is, it's something even more amazing. Only a chosen few with an eye for bold fashions can follow the rainbow to Rainbow High, the colorful fashion school where everyone learns to flaunt their true color.

In a post-apocalyptic world, humanity lives in small settlements whose main activity is to produce electricity.