It's a hot day on Puffin Rock, and Oona, May and Marvin want to swim in the pond, but the water has dried up. Even the frogs are gone - all except one, but he's hopping away too. Where is he going? The friends hop along to find out - follow the frog sounds like a fun game! The frog leads them all over the island. Will they be able to keep up with him and find his friends?