Haru Irei, who witnessed the first lighting of the 1/1 scale RX-78-2 Gundam in Odaiba, becomes inspired to build Gunpla. Gunpla which is a portmanteau of Gundam Plastic. Haru purchases a one of a kind gunpla, the GPB-X80 Beginning Gundam. After building the kit, Haru, now a Gunpla Builder, and the Beginning Gundam enter the virtual world of Gunpla Battle, where players can pilot their customized Gunpla in team matches or one-on-one fights. Haru must rely on the support of his friends if he is to become a Gunpla Battle Champion and attain the rank of Gunpla Meister.

When you wake up, only your soul! ?　The life of father and child! One day, Berla, the eldest daughter of the Duke of Quishein, has her body stolen by another soul. As she wanders around with only her soul, the mage Dionore makes her a proposal. It is to make a homunculus, a man-made body, for Berla's body...!