Deep Space 12 is under siege by the Grey once more, as the crew of the Helena struggle to catch Siroc before he arrives at the Dyson Sphere. While the battle rages outside, Shelby and Lefler are leading a skeleton crew of 93 in a desperate ploy to restore Excelsior and rejoin the fight to protect the station’s civilians.

With time completely gone, all hope lies in Knapp, Martinez, Dao, Aster, and McFarland being able to figure out the Hybrid; but things are far more different – and deadly – than they seem.