The story of Gundam Build Fighters Try is set 7 years after the end of the 1st series. Now Seiho Academy's Gunpla Battle Club has only one member, Hoshino Fumina, who is a third grade student in junior high. As the president of the club, she needs two more members to participate in the upcoming All-Japan Gunpla Battle Championships. One day she encounters a transfer student named Kamiki Sekai, who has traveled around for Kenpo training with his master. Then joining by a young Gunpla builder Kousaka Yuuma, their challenge to the Gunpla Battle begins.... (Source: Crunchyroll)

Two years have passed since the EL-Divers incident, and the popularity of the game Gunpla Battle Nexus Online (GBN) has continued to skyrocket. With the addition of exciting new features such as missions and story events, the GBN experience is more immersive than ever before. Amidst the player base, a user known as Hiroto Kuga has been gaining notoriety for his top-notch skills. Through a series of coincidences, Hiroto meets three other players: the boastful Kazami Torimachi, the mysterious May, and the timid Parviz. Forming the "BUILD DiVERS," the unlikely group sets on a story mission rumored to carry bountiful in-game rewards. Together, the BUILD DiVERS must confront their own weaknesses as they join arms in a journey that may very well transcend the existence of GBN itself. [Written by MAL Rewrite]

The massive beam of light fired from Eldora's moon has completely shattered the BUILD DiVERS' conception of Gunpla Battle Nexus Online (GBN). This has forced Hiroto Kuga and his teammates to reevaluate their mission on Eldora now that they are faced with potentially very real consequences. Despite this, the BUILD DiVERS rejoin the fight against the One-Eyed to protect what they hold dear. In the battle that concerns the fate of both Earth and Eldora, sparks fly as Hiroto is forced to confront his past amidst the revelations of GBN's shocking secrets. [Written by MAL Rewrite]

The story takes place in the future where war machines from evil mechanical alien empire Garufa finally reaches Earth. In order to protect earth, an Earth defense organization called GEAR (Guard Earth and Advanced Reconnaissance) is formed. GEAR has an ultimate weapon in a form of war mecha, GEAR Fighter Dendoh, which is piloted by two elementary school students, namely Kusanagi Hokuto and Izumo Ginga. Can the friendship between Hokuto and Ginga unleashed the full potential power of Dendoh in order to fight Garufa? (Source: AniDB)