No spoilers: what you need to know before watching Rogue One

Rogue One is an unusual film to come from a massive film studio in 2016. While the rest of Hollywood is aping the Marvel method — creating movies that exist, in part, to establish spinoffs and sequels in never-ending fictional universes — Rogue One is shamelessly standalone. There won’t be a sequel.Technically, Rogue One isn’t even part of the core Star Wars series. Disney is calling it a “Star Wars Story,” referring to a long-term plan to tell one-off stories