A powerful beam from Eldora's moon shatters the BUILD DiVERS' understanding of Gunpla Battle Nexus Online (GBN), prompting Hiroto Kuga and his team to reassess their mission on Eldora. Despite the newfound risks, the BUILD DiVERS unite to battle the One-Eyed and safeguard their cherished beliefs. In a crucial showdown with implications for Earth and Eldora, Hiroto grapples with his history while unraveling the startling truths behind GBN's mysteries.