Captain Dylan Hunt must save the Andromeda from the Nietzscheans, who are trying to persuade Tyr to help them destroy the ship and rebuild his Nietzschean life. His new life would include a wife to carry on his lineage.

An arranged marriage between two rival Nietzschean Prides puts the Andromeda Ascendant in danger when Captain Dylan Hunt agrees to transport the bride to the wedding.

After discovering Tyr has hidden the remains of Drago Musevini on board the Andromeda, Dylan questions Tyr's loyalty. Beka and a Nietzchean both race to repair their ships before the other destroys them, and Harper is left in command of the Andromeda, and must decide whether or not to protect a convoy and risk losing the Andromeda.

A Commonwealth conference becomes a backdrop for Magog espionage, while Harper tries to discover how one of their spies managed to remove some of his Magog larvae.

Tyr learns that he is a father.