Star Trek Discovery Season 3: Everything You Need To Know
2. The Future
Captain Pike returns to the Enterprise to fight off Control's fleet and the remaining Discovery crew, including Georgiou and Spock, opt to accompany Michael on this one-way mission. Ash Tyler remains behind but joins up with L'Rell and a fleet of Klingon warships which help the Enterprise battle Control and Discovery make her escape.
During the battle, Spock is separated from Michael but helps her finally solve the mystery of the signals: The signals were sent by Michael as the Red Angel to guide Discovery to various points along her journey in order to secure Control's defeat. Michael begins jumping back in time and, when all the pieces are in place, guides Discovery 900 years forward into the distant future and safely out of Control's reach.
With Control's fleet wiped out and Discovery and the data gone, the Enterprise returns to Earth where Pike, Spock, and Ash are debriefed by Starfleet. In order to ensure no one ever finds the Sphere data, everyone tells Starfleet that Discovery was destroyed in the battle with Control.
Aboard the Enterprise, Pike and Spock prepare to resume their own mission when a new signal appears – a sign from Michael that the Discovery made it safely to the distant future.