In the land of Hinomoto, inspired by Japan, railway travel once reigned supreme with trains controlled by humanoid modules known as Raillords. However, the era of trains faded as 'aerocrafts' became the favored mode of transportation, leading many rail lines to fall silent. Soutetsu, who suffered a tragic loss in a rail accident, found solace in the Migita family, renowned for their shochu brewery in Ohitoyo. Determined to protect his town from potential pollution linked to an aerocraft factory, Soutetsu unintentionally awakens Hachiroku, a dormant Raillord, becoming her unexpected master. Together, they embark on a quest to locate Hachiroku's missing locomotive, aided by his stepsister Hibiki, the town's mayor, Paulette, and other allies.