Mobile Suit Gundam Thunderbolt: December Sky is an anime film that premiered in spring 2016, produced by Sunrise.

About the production: the story comes from a manga, the film runs about 69 minutes and its current status is "finished".

Its main genres are action, drama, mecha and sci-fi, with themes such as Military, War, Space and Primarily Adult Cast.

On AniList, Mobile Suit Gundam Thunderbolt: December Sky has an average score of 78%, a very good score, and appears on 10,484 users' lists.

The franchise continues in or follows from: Kidou Senshi Gundam Thunderbolt: BANDIT FLOWER.

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. (Source: Gundam Wikia)

Official synopsis from AniList.