It's summertime, and Pugicorn and Ava are so excited for their very first holiday outside of Twinkleton-Under-Beanstalk in Rainbowland! They can't wait to sip pup-tails by the pool and bask in the sparkling sun. But when their summer plans are derailed by rainy spells, a lost little Rainbowroo might just help them to meet someone new to help them have the best summer ever!!