Guided by his visions, John takes Halsey and Cortana back to where it all began, looking for answers from his past. With Soren along for protection, Kwan goes in search of an army. Meanwhile, John's behavior inspires another Spartan to begin a journey of self-discovery. And Miranda discovers a possible link between the artifact and something much larger.
Depicting an epic 26th-century conflict between humanity and an alien threat known as the Covenant, the series weaves deeply drawn personal stories with action, adventure and a richly imagined vision of the future.