May and Marcoh's efforts to decode the research of Scar's brother yield progress, but it might be too late to prevent catastrophe. Violence is spreading across the land, and it will soon reach the northern border.

In the snowy north, the soldiers of Fort Briggs engage an invading army, and Marcoh leads an attack against monstrous Envy. In Central, an ominous and shocking secret is revealed to Olivier Armstrong.