Earth is infected with a plague that has no cure. Matthew Gideon commands a ship to Earth to offer help.

Gideon mediates between Earth miners and the residents of a planet containing a virus-fighting mineral and a fire-breathing dragon.

Galen proposes searching hyperspace for the mysterious Well of Forever in hopes of obtaining answers to many questions.

A mysterious sphere a planet with a reputation as a place of healing prompts Gideon and the others to relive traumatic moments from their past.

Gideon must deport a colony of renegade humans. Dureena finds a lost tribe of her people.

A murder signals a threat to a Mars conference of medical experts gathered to coordinate the search for a cure to the plague.