Ever since she defeated the Black Hole and saved the Space Star Village, Romi has lived a peaceful live in Harmony Town with Heartsping at Heartrose Bakery. One day, Romi and Heartsping are lost in the forest and attacked by an evil robot until they are saved by another robot who reveals to be an Autobot!! Other than that their leader makes Romi and Heartsping create a new team to fight against Decepticons. A new adventure is about to begin!