The story is set two years after the story of Gundam Build Divers, with a new version of the "Gunpla Battle Nexus Online" (GBN) game, and new Divers: Hiroto, a lone Diver who plays like a mercenary; Kazami, a wanderer who goes between parties; May, a mysterious solo Diver who participates in Gunpla Battles all day; and Parviz, a beginner Diver who has an introverted attitude but desires co-op play. While all four live solitary existences, they are brought together by circumstance to form a team in an experience that goes beyond GBN.
(Source: Anime News Network)
— Description from AniList community (anilist.co).
