The story is set in the game's fictional southern Hinomoto city of Ohitoyoshi after it was successfully revitalized thanks to Hachiroku's tourism promotion. The city is now planning to host the first Maitetsu Festival to bring together Railords and their respective masters from all of Hinomoto. Inspired by the humans planning for the festival, the famed Suzushiro and other Railords are also hosting a "Railord Summit" at the railroad station cafe Amairo to share their collective wisdom.

The adventures of a baby shark in nostalgia-filled Yauo Town. Whether it's cider on a summer day, freeze pops, radio calisthenics, festival stalls, or hanging out with friends, the world sparkles when reflected in the eyes of the baby shark.

Seventh season of .