Novos conflitos irrompem após uma geração relativamente pacífica. A fim de acomodar a população crescente, a Federação Terrestre constrói novas colônias espaciais. Porém, a Crossbone Vanguard decide tomar essas colônias para estabelecer seu império extraterrestre. A história de Gundam F91 acompanha o jovem colono Seabook Arno, sua namorada Cecily Fairchild, e os esforços da milícia Crossbone Vanguard, liderada pelo avô de Cecily, Meitzer Ronah, para estabelecer sua aristocracia conhecida como "Cosmo Babylonia". Mantendo a tradição da franquia, o civil Seabook é forçado pelas circunstâncias a pilotar o Gundam F91, projetado por sua mãe, em uma ferrenha luta pela sobrevivência.
The series follows the odd life of kindergartener Makoto Sawada and his family. Makoto gets into all sorts of toilet and adult humor. He sometimes dresses in his mother's and sister's clothing, and often has a long strand of mucus dangling from his nose.
Hyuma joined the glorious giant army. However, while he was happy, he revealed his fatal weakness, the lightness of the ball, and was demoted to the second army. In his humiliating farm life, he finally completes the changing ball "Big League Ball No. 1". And whereabouts of the confrontation with his fateful rival, Mitsuru Hanagata, Toyosaku Samon ...
Kozue is a high school girl and an enthusiastic volleyball player. Her dream is to play on the Japanese national volleyball team. Over the course of the series she makes it from the school district league up to the Japanese volleyball finals, step by step until the international volleyball championship. But the faster and higher Kozue climbs, the more she is confronted with the dark side of success: too-high expectations, self-conceit, and envy.