The team discovers that the Commonwealth fleet was betrayed by a man in the service of the Abyss, who has convinced one of the Triumvirs that Dylan betrayed them.
The crew of the Andromeda uncovers an android army poised to invade the Commonwealth, created by the same being that developed the Magog worldship. Dylan reunites with an old flame.
A pair of Nietzschean gamblers capture Dylan, subjecting him to virtual reality scenarios so that their clientele may gamble on his responses. The Andromeda tries to weather a series of electro-magnetic storms.
To recover a dangerous weapon before the Magog do, the crew attempts to mediate a dispute between a Nietzschean brother and sister vying for control of the device -- while Harper risks his life to analyze and deactivate it.
The crew learns that Telemachus Rhade is in pursuit of Tyr, and help him to locate their former shipmate -- only to find themselves at the center of Tyr's latest scheme. A mysterious woman offers Dylan and Trance a map to the source of the Abyss.
When the crew helps put down a prison riot on the planet Baltria, Dylan discovers that his destiny may be to save a woman who has been held there for 300 years.
Dylan finds himself transported to an alternate universe, where he is a legendary hero and the Commonwealth has been overthrown by an evil Harper, while Beka leads a resistance movement.
Andromeda's crew find a world of perfect peace, which sits in the path of the Magog worldship. Rhade questions his priorities after falling in love with one of the locals, who refuses to leave.
Andromeda tries to protect Arkology from the onslaught on the Magog, and the crew must decide whether they will stand or flee. Dylan faces his final destiny at the Route of Ages.