Strange New Worlds

In the 23rd century, Starfleet Admiral Robert April recalls Captain Christopher Pike of the starship USS Enterprise from shore leave after Pike's first officer, Una Chin-Riley (referred to as "Number One"), goes missing during a first contact mission. Pike is reluctant to return to space and confides in Vulcan science officer Spock—who has just become engaged to T'Pring—that he saw a vision of his own paralysis during their mission with the USS Discovery. They travel to the planet Kiley 279, which is in a similar state to 21st century Earth and on the brink of civil war. They have reverse-engineered a weapon from starship warp drives after witnessing the Discovery mission in nearby space. Pike and his crew rescue Number One from captivity and break Starfleet's General Order One by interfering in the society to convince them not to use the weapon.

Summary from Wikipedia, CC BY-SA 4.0.