U.C. 0123. After a generation of peace, the Earth Federation has begun to build new space colonies to house humanity's growing population. But a new force, the aristocratic Crossbone Vanguard, plans to seize the colonies of the newly constructed Frontier Side for itself. As their home becomes a battlefield, a handful of young civilians struggle to escape the conflict. To save his friends and family, the reluctant warrior Seabook Arno becomes the pilot of a new Gundam which bears the code name F91.

Mobile Suit Gundam F91

John is a cheerful and energetic young boy, who lives in a small coal-mining town in England. One day he finds a small dog lost in a flock of sheep. John takes him back home and names the puppy Lassie. Soon they become good friends, just like real siblings. Lassie is a very lovely and smart dog, so everyone in the town loves her very much.  But their happy life doesn't last long. Suddenly a coal-mine owner closes his company because there is no more coal left in the coal mine. John goes to meet the coal-mine owner to request a further investigation. The owner accepts John's request, but in exchange for that, he takes Lassie to Scotland.  Priscilla, the owner's granddaughter and also John's friend, cannot just stand by and let Lassie suffer in a cage. She opens the cage and sets Lassie free. Lassie sets out on a very long and hard journey from Scotland to her hometown.