In the second installment of the award-winning Horizon series, Dr. Caeli Crys returns to her war-torn world to fight for those she left behind. Almagest, Caeli's home, stands on the brink of revolution. Long hidden from the rest of the galaxy, the once-peaceful planet suffers under a regime that grows more violent and oppressive by the day. Marcus, Almagest's dictator, is building an arsenal of alien weaponry by selling empathic children into slavery. A resistance has risen, but they are outmanned, outgunned, and in hiding. Joined by Commander Derek Markham and his elite squadron of operatives, Caeli embarks on a dangerous mission to find the Resistance, rescue her captive people, and save her civilization from destruction.