The enterprise war
(Book)

Hearing of the outbreak of hostilities between the United Federation of Planets and the Klingon Empire, Captain Christopher Pike attempts to bring the U.S.S. Enterprise home to join in the fight. But in the hellish nebula known as the Pergamum, Pike finds an epic battle of his own. This battle pits ancient enemies against one another-- with not just the Enterprise, but her crew as the spoils of war. Lost and out of contact with Earth for an entire year, Pike and Number One struggle to find and reunite the ship's crew, while Science Officer Spock confronts a mystery that puts even his exceptional skills to the test. -- adapted from back cover