If you’re someone who thinks it’s not all it’s cracked up to be, you need to read this post.
The movie recounts the events that take place between Revenge of the Sith and A New Hope.
It’s the missing link between episodes III and IV.
Star Wars: A New Hope, the fourth episode in the series, begins with Darth Vader interrogating Princess Leia about some missing plans.
Rogue One tells the story of a band of rebels who manage to steal the plans for the Death Star, the iconic space station that’s capable of destroying entire planets.
Remember the big speech before Luke and the Rebellion attack the Death Star at the end of A New Hope?
It's likely that Rogue One is the story of how that intel was obtained.