Star Trek: Axanar
"Axanar" takes place 21 years before the events of “Where no Man Has Gone Before”. It is the story of Garth of Izar, the legendary Starfleet captain who is Captain Kirk’s hero and the role model for a generation Starfleet Officer's. Garth charted more planets than any other Captain and was the hero of the Battle of Axanar and his exploits are required reading at Starfleet Academy. This is the story of Garth and his crew during the Four Years War, the war with the Klingon Empire that almost tore the Federation apart, and whose resolution solidified the Federation and allowed it to become the entity we know in Kirk's time.
It is the year 2245, four years into the war with the Klingons.