버넘 선장과 U.S.S. 디스커버리 승무원들은 800년 된 로뮬란 함선에 숨겨진 수수께끼의 유물을 회수하는 임무에 투입되지만, 유물을 노리는 또 다른 이들과 마주치게 된다.

Trapped inside a mysterious alien portal that defies familiar rules of time, space, and gravity, Captain Burnham must fight Moll – and the environment itself – in order to locate the Progenitors' technology and secure it for the Federation. Meanwhile, Book puts himself in harm's way to help Burnham survive and Rayner leads the U.S.S. Discovery in an epic winner-takes-all battle against Breen forces.