While patrolling Federation space, the U.S.S. Shenzhou encounters an object of unknown origin, putting First Officer Michael Burnham to the test.

Face to face with Klingon vessels, the U.S.S. Shenzhou prepares for the possibility of war if negotiations fail. Amidst the turmoil, Burnham looks back to her Vulcan upbringing for guidance.

Burnham finds herself aboard the U.S.S. Discovery where she quickly realizes things are not as they seem, including the mysterious Captain Gabriel Lorca.

With tensions and stakes high as Starfleet continues in their efforts to end the war with Klingons, Burnham begins to settle in to her new position aboard the U.S.S. Discovery.

While on a mission, Lorca unexpectedly finds himself in the company of Starfleet Lieutenant Ash Tyler and notorious intergalactic criminal, Harry Mudd; Burnham voices her concerns about the repercussions of the spore drive jumps on Ripper.

The U.S.S. Discovery crew is intrigued by new addition, Lt. Ash Tyler. Sarek seeks Burnham's help, rekindling memories from her past. Admiral Cornwell questions Lorca's tactics.