The series, controversial at times, wraps after five seasons and sixty-five episodes. The episode was not written as a finale, but reshoots were granted by Paramount to wrap the series up.

After Moll and the Breen capture a mysterious structure that contains the Progenitors’ power, Captain Burnham must lead a covert mission to retrieve it before the Breen figure out how to use it.

When Burnham is trapped within a “mindscape” designed to test her worthiness to retrieve the Progenitor’s powerful technology, Book, Rayner and the crew of USS Discovery must hold off the Breen long enough for her to escape.

With Moll and L’ak in custody, the Federation is pulled into a diplomatic and ethical firestorm when the Breen demand they be handed over. Meanwhile, Book looks for ways to help as Tilly, Adira and Reno work to decipher the latest clue.

Captain Burnham must consider breaking the Prime Directive when a local tradition in a pre-warp society threatens Tilly’s life. Culber tries to connect with Stamets and Adira steps up when Rayner assigns them a position on the bridge.

Captain Burnham and Book journey into extradimensional space in search of the next clue to the location of the Progenitors’ power, while Rayner navigates his first mission in command of the U. S. S. Discovery and Culber opens up to Tilly.

As the race between Discovery and the bounty hunters L’ak and Moll intensifies, an unexpected weapon forces Burnham and Rayner to work past their differences to save the rest of the crew.