When Jyn Erso was five years old, her mother was murdered and her father taken from her to serve the Empire. But despite the loss of her parents she is not completely alone-Saw Gerrera, a man willing to go to any extremes necessary in order to resist Imperial tyranny, takes her in as his own, and gives her not only a home but all the abilities and resources she needs to becomea rebel herself.

Jyn dedicates herself to the cause-and the man. But fighting alongside Saw and his people brings with it danger and the question of just how far Jyn is willing to go as one of Saw's soldiers. When she faces an unthinkable betrayal that shatters her world, Jyn will have to pull the pieces of herself back together and figure out what she truly believes in... and who she can really trust.