When Earl sings a sea shanty about a sunken treasure ship at the bottom of Lake Lucky, Penny becomes convinced that it’s true. Penny wants to put together an underwater exploration but the Hoppers, led by Filipa, are dubious about the authenticity of the tale. Through research, Penny convinces the Hoppers that it there’s a good chance it is true, but they need Lonny Beaver’s mini-submarine to see for themselves. Penny and Filipa wind up on a thrilling underwater adventure, and discover that there is treasure down there – but it’s not at all what they imagined.

HOP with his diverse group of friends encourages young children to embrace their individuality. Together they show us the powers of friendship and kindness as they navigate the mud puddles of life. Created by Marc Brown, creator of Arthur!