Mobile Suit Gundam Thunderbolt: December Sky (機動戦士ガンダム サンダーボルト DECEMBER SKYディッセンバースカイ Kidō Senshi Gandamu Sandāboruto Dissenbā Sukai) is an upcoming 2016 anime movie created by Sunrise. It is a feature length compilation of the 4 episodes of the Mobile Suit Gundam Thunderbolt ONA. Unlike the ONA, this will also be dubbed in English.
During the One Year War of U.C. 0079, the Earth Federation and Principality of Zeon engage in a fierce battle at the "Thunderbolt Sector", a shoal zone in the former Colony Side 4 "Moore". After successfully infiltrating Zeon's sniper field, ace Federation pilot and jazz enthusiast Io Fleming is given control of the latest Gundam prototype.
