War is destroying the galaxy. For many years the Republic and the separatists have carried countless battles around many stars, and each faction is trying to create increasingly deadly technologies. Orson Krennic is a scientist involved in the secret project of Emperor Palpatines Death Star, and in order to develop that weapon of mass destruction he recalled that he has a friend in the field of energy use: Galen Erso.
Galens research and work has drawn the attention of both the Republic and the separatists, so much so that he has been under the watch of groups that want to kidnap him and steal his work. Krennic manages to rescue Galen, his wife Lyra and their young daughter Jyn from the Separatists, but what Galen did not know was that Krennic would offer him a job to continue his research for altruistic purposes that would really be nothing more than work for him Development of the Death Star, without knowing it