Frontier Guard (2010)

Frontier Guard is set in the 25th Century, by which time humans have spread out into the galaxy. But our history leaves many secrets to be found. Our story begins when Conner Blake is accepted into the Frontier Guard Academy and is immediately assigned to the worst training vessel on campus, the starship Polaris. His past quickly returns to haunt him as he struggles with his identity and his fellow Academy cadets aboard the Polaris.