Spock/Starfleet/Christopher Pike/Stopping Control

Spock subsequently joined the Discoverys ongoing mission to investigate the red bursts, discovering that Control had framed Spock for murder () and helping to trap the Red Angel on Essof IV. To everyone's surprise, the Red Angel was revealed to actually be Gabrielle Burnham, Michael Burnham's mother who was long believed to be dead. While attempting to prevent Control from wiping out all life in the galaxy after gaining full sentience, Gabrielle had discovered that Spock was the only one capable of truly perceiving her and her purpose. However, an effort to beam Gabrielle into their time permanently failed and resulted in the Red Angel suit and Gabrielle getting pulled back into the 32nd century, unable to return due to Gabrielle's time crystal being destroyed. ()
When the decision was made to send Discovery into the future in order to prevent Control from ever getting its hands on the data, Spock decided to accompany his sister on the one-way trip. During the Battle near Xahea, Spock helped to guide Burnham's use of the second Red Angel suit from a shuttlecraft, but his engines were damaged and he couldn't return to the ship with her. With Discovery too badly damaged to risk lowering its shields to beam him onboard, Spock was forced to remain behind in 2257. Burnham promised to send the seventh red burst to signal her brother that they had successfully made it and offered him some final words of advice. Spock told Burnham that he loved her, a sentiment that she returned, before Spock had the beam him out. From the Enterprise bridge, Spock witnessed Burnham successfully lead Discovery through the wormhole to the future. ()