Star Trek: The Last Starship #3

The U.S.S. Omega launches into battle! Its adversary? A chaotic Klingon cult whose bloodred path is focused purely on obliterating the remaining vestiges of Starfleet. What's left of the Federation is falling apart by the moment. Captain Sato, who once dreamed of uniting the galaxy, is now living his worst nightmare. He was raised in a time of peace…but no progress comes without a fight. While the Klingons might be his enemies after centuries of peace, he has Kirk as his ally…and no one knows how to defeat a Klingon better than the Federation's greatest hero.