Following the EL-Divers incident, Gunpla Battle Nexus Online (GBN) thrives with new features like missions and story events, immersing players further. Skilled gamer Hiroto Kuga gains fame in this virtual world and, by chance, encounters Kazami Torimachi, May, and Parviz. United as the 'BUILD DiVERS,' this diverse team embarks on a high-stakes story mission promising great rewards. As they face personal struggles, the BUILD DiVERS unite for a quest that could redefine GBN's reality.