300th Night

At the end of the academic year, the cadets perform a Klingon ritual declaring themselves as a chosen family, though Caleb declines. At the same time, Starfleet pulls back after learning that Braka has weaponized the apocalyptic Omega molecule. Finally accessing a message from Anisha, Caleb with Darem, SAM and Genesis, goes after her on a planet in Venari Ral space, followed by Ake, Reno, the Doctor and stowaways Jay-Den and Tarima. Having found his mother, Caleb considers abandoning Starfleet, but goes back when his friends are in trouble. The group is rescued by the Athena, and they discover that Braka has boxed the Federation in with Omega mines, leaving only the Athena – crewed only by the cadets, Ake, Reno, and the Doctor – on the outside. As Ake is reunited with a frightened Anisha, Reno broadcasts a distress call to all Federation ships.

Summary from Wikipedia, CC BY-SA 4.0.