Polly, Shani and Nic are excited to be the first swimmers at the water park's newest pool! But when something is making the pool mysteriously dirty, they go tiny to investigate. And find it's a sweet water fairy struggling with her powers.

Lila is excited to babysit her twin siblings to prove to her dad she can be a good junior camp counselor! But when the pocket-sized twins are accidentally taken in a toy car mix-up, Lila and Polly go on an action-packed journey in the supermarket.