Jyn Erso escapes the Galactic Empire: A young Jyn Erso, her research scientist father, Galen, and her mother, Lyra, are in hiding from the Galactic Empire. Orson Krennic, an Imperial weapons developer, forcibly takes Galen away to continue working on the Death Star and kills Lyra. Jyn escapes, and Saw Gerrera, a Rebel extremist, finds her.
Bodhi Rook delivers a message: Fifteen years after his capture, Galen entrusts Bodhi Rook, an Imperial cargo shuttle pilot who's defected to the Rebels, with an important holographic message for Saw Gerrera — and for Jyn. In it, Galen details that he has built a covert weakness into the Death Star and reveals the location of the weapon's plans.
The Death Star destroys Jedha: In an attempt to convince Grand Moff Tarkin of the Death Star's power and his competence in managing the project, Krennic uses it to attack Jedha's capital, where Saw Gerrera is based. Jyn and fellow Rebels Bodhi, Cassian Andor, K-2SO, Chirrut Îmwe, and Baze Malbus are present on Jedha but manage to escape — with Jyn's knowledge of her father's message.
The Rebels invade Scarif: The Rebels find Galen while he admits to Krennic that he leaked information about the Death Star. Rebel pilots intervene with an air raid, and Galen is mortally wounded, prompting Jyn to propose a plan to steal the blueprints. After the Rebel leaders fail to move forward with it, Jyn, accompanied by several willing Rebels, takes it upon herself to steal the plans from the high-security data bank on Scarif.
The transmission of the Death Star plans: The Rebels attempt to steal the plans, and many die in battle against the Imperials. Jyn and Cassian successfully obtain the plans and, after a final confrontation with Krennic, transmit them to a Rebel command ship. However, Tarkin uses the Death Star to destroy Scarif and everything on it. But the silver lining? The stolen information lands in the hands of Princess Leia.