Once again in command of their ship after pulling off the greatest of escapes, the crew have detained their Devore captors, only to find themselves on the run from a Hirogen hunting party intent on claiming Ulysses as their prize. In desperate need of repairs and in danger of succumbing to their wounds, Captain sh’Elas is forced to accept help from an unlikely source in their quest for survival.

Soon, Ulysses finds itself lured into the safety of a gaseous anomaly, only to find themselves face to face with an even more dangerous situation. Telepaths in sickbay begin to suffer strange symptoms that threaten the safety of all aboard. It’s the enemy within versus the enemy beyond, but a devastating loss soon threatens everything…