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.

While in unfamiliar territory, the U.S.S. Discovery crew is forced to get creative in their next efforts to survive opposing and unprecedented forces and return home.

The crew continues their guise, and Burnham is ordered on a merciless mission to end the resistance in hopes of returning home. Meanwhile, Tilly works on restoring Stamets’ neurofunction.

A fourth signal leads the U.S.S. Discovery to a world where Pike is forced to make a life-changing choice. Burnham and Spock investigate a Section 31 ship gone rogue, leading to a discovery with catastrophic consequences.