Two years have passed since the events in Gundam Build Divers. The story now revolves around an upgraded version of the virtual game "Gunpla Battle Nexus Online" (GBN) and a new group of Divers. These Divers consist of Hiroto, an independent and mercenary-like player, Kazami, a party-loving nomad, May, a mysterious lone player who is constantly participating in Gunpla Battles, and Parviz, a novice who is introverted but eager for cooperative play. Although they normally lead separate lives, fate has brought these four together to form a team and embark on a journey that surpasses the confines of GBN.