An assortment of animals living separate lives discover they need each other when they have a chance encounter on a river.

Rachel and Kirsty are helping Milly the River Fairy clean up a polluted river. But troublemaking goblins keep getting in the way. The girls need to get Milly's wand back to make the river a safe place again.

Evette is a nature-lover full of crafty ideas for reusing and upcycling clothes. When she finds a vintage swimsuit in Gran E's closet, she also uncovers a family secret that could explain why her mother's family, which is Black, and her father's, which is White, don't spend time together. When she visits the river where her grandmother used to swim, she realizes how polluted it's become. She rallies her new friends Makena and Maritza along with her...

Jack is up for anything... as long as he doesn't have to get wet. No one knows about his fear of water, and he's determined to keep it a secret. But then he slips into a shallow stream and is pulled out of a deep, fast-flowing river gorge by Bear Grylls. They work together to build a bamboo raft, navigate the whitewater rapids and steer clear of hidden dangers... Can Jack rise to the challenge of being thrown in at the deep end? Will he sink or swim?...