Arriving 930 years in the future, Burnham navigates a galaxy she no longer recognizes while searching for the rest of the U.S.S. Discovery crew.

After the U.S.S. Discovery crash-lands on a strange planet, the crew finds themselves racing against time to repair their ship. Meanwhile, Saru and Tilly embark on a perilous first-contact mission in hopes of finding Burnham.

Finally reunited, Burnham and the U.S.S. Discovery crew journey to Earth, eager to learn what happened to the Federation in their absence.

Burnham and Adira visit the Trill homeworld in hopes of unlocking the secrets trapped within Adira's mind. Back on the U.S.S. Discovery, Saru's efforts to help the crew reconnect with one another take a surprising turn.

After reuniting with what remains of Starfleet and the Federation, the U.S.S. Discovery and its crew must prove that a 930 year old crew and starship are exactly what this new future needs.

After receiving a message from Book, Burnham and Georgiou embark on a rogue mission to find him, leaving Saru to pick up the pieces with Admiral Vance. Meanwhile, Stamets forms an unexpected bond with Adira.

While grappling with the fallout of her recent actions, and what her future might hold, Burnham agrees to represent the Federation in an intense debate about the release of politically sensitive - but highly valuable - Burn data.

Burnham and the U.S.S. Discovery crew travel to Book's home planet to help rescue it from Osyraa, the formidable leader of the Emerald Chain. Meanwhile, Stamets and Adira continue their search for valuable information on the origin of the Burn.

The U.S.S. Discovery crew journey to a mysterious planet in hopes of finding a cure for Georgiou's deteriorating condition. Stamets and Adira make a stunning breakthrough with the newly acquired Burn data.

Georgiou uncovers the true depths of the plot against her, leading her to a revelation about how deeply her time on the U.S.S. Discovery truly changed her.

Discovery ventures to the Verubin Nebula, where Burnham, Saru, and Culber make a shocking realization about the origin of the Burn as the rest of the crew faces an unexpected threat.

After capturing the U.S.S. Discovery, Osyraa seeks a meeting with Admiral Vance while Burnham and the crew must overcome unimaginable odds as they attempt to regain command of their ship.

Season finale. As the Emerald Chain tightens its grip and the mystery of the Burn is finally solved, Burnham and the crew have one last chance to save themselves - and the Federation.