In this new set of adventures the Autobots live on Earth and maintain their secret identity. They are joined by 3 teens as they battle the Decepticons.

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!