Mongruxx: Where the river ends - Book 3

Convallis Megalopolis, Alien AI secrets, some old friends leave and never return. The Humans, Mongruxx, Machina, and Gaja people have merged into one team, a large extended family of a sort, the Mongruxx. The dead have been left behind, as they set out to honor the racial debts of the distant past. The Megalopolis City-States loom ahead, with mercenary contracts that could cost them everything, or pay them their weight in gold.