Model Suit Gunpla Builders Beginning G is an original video animation series produced by Sunrise to celebrate the 30th anniversary of the Gundam plastic model kits. It's directed by Kou Matsuo and written by Yousuke Kuroda, and features character designs by Kaichiro Terada. The OVA was released in August 15, 2010 to December 19, 2010 with 3 15-minute Episodes. Unlike other Gundam titles, Gunpla Builders Beginning G takes place in a present-day timeline.
Aside to the OAV, two manga sequels were released in Dengeki Hobby Magazine.
Haru Irei, who witnessed the 1/1 scale RX-78-2 Gundam in Odaiba, becomes inspired to build Gunpla, which is a portamanteau of Gundam Plastic model kit. Haru purchases a one of a kind Gunpla, the GPB-X80 Beginning Gundam. After building the kit, Haru, now a Gunpla Builder, and the Beginning Gundam enter the virtual world of Gunpla Battle, where players can pilot their customized Gunpla in team matches or one-on-one fights. Haru must rely on the support of his friends if he is to become a Gunpla Battle Champion and attain the rank of Gunpla Meister.