The adventures of six fish-tailed kids- Molly, Gil, Oona, Deema, Nonny, and Goby.

When city-turned-country girl Lucky meets a wild mustang named Spirit, she feels an instant connection to the untamable horse. A courageous and natural-born leader, Lucky navigates this new world with her two new best friends, Pru and Abigail by her side. The trio embark on thrilling adventures, find genuine friendship, and discover what it means to be free!

In a small Western town a young girl from the city forms a tight bond with wild horse Spirit while having adventures with her friends.