Gundam Build Fighters is an anime series set in a world where people can build and customize their own Gundam models, known as Gunpla. These models can be brought to life through virtual battles, allowing fans to compete against each other using their creations. The series emphasizes creativity, teamwork, and the joy of building. The story follows Sekai Kamiki, a young boy who aspires to become a skilled Gunpla fighter. Along with his friends, he participates in various tournaments, facing off against other talented builders. The series showcases the excitement of competition and the bond formed through shared interests in Gunpla building.