Star Wars: Rogue One - 10 Major Plot Clues From The Final Trailer
5. The Night Battle Concerns Jyn's Father
Moving on from Jedha, the mission is likely to really begin in earnest, and that's where this mysterious nighttime raid comes in.
We've had a few other glimpses of it previously, and while it looks like it should be a thrilling sequence, it's harder to get a grasp on what exactly is going on. Until now, anyway.
Based on this trailer, what seems likely is that this is where the Rebels head after Jedha, in order to find (and rescue) Galen Erso. It'll be a decent-sized battle, Rogue One's equivalent of the fight on Takodana before the major battle on Starkiller Base from The Force Awakens.
Given most people probably die in this movie, and the talk about taking the next chance, I think the Rebels will suffer a bit of a setback here - failing to rescue Galen, but getting key information about the Death Star.