Sanctuary IV explores the situation where Sanctuary is almost full, the pandemic above the crust is out of control, and rich guys from all over the world are clamoring to get in. Unfortunately, the Sanctuary II solution promised by Carlsbad, NM, is no longer an option. Terrorists posing as patriots have destroyed the fledgling skeletal structure. Plans are laid to bring the construction workers home.

An infusion of International Elites may provide a vital inflow of revenue to help fund the new development, but it also brings along a host of problems. Language and cultural differences exacerbate the issue of integrating new citizens into the mix. Technology helps. Artificial Intelligence and Proximate Immortality play their own inimitable roles.

In the end The Chosen Ones are left to reflect on their contribution to the survival of species homo sapiens. As you might imagine, they wonder whether the miniscule results have been worth their Herculean effort.