Apocalypse

Incredibly, Mike Brannon wins the Power Ball Lottery of almost 300 million dollars, but he already knows how he will spend it. In point of fact, he had been given the winning numbers in advance by aliens for the express purpose of funding and building a survival community prior to Earth's impending collapse of civilization and fall into chaos. The near extinct humanoid aliens are escaping their dying water world.
This "Blue Team" hopes to help and merge with a human survival team in hopes of saving their race, in part, by in-breeding with humans for their needed DNA diversity. They have some limited ability to view the future and use this ability to obtain the winning lottery numbers. They also witnessed the future impending collapse of Earth's civilization, which would also mean their certain doom as a race as well.
While en route to Earth they recruit Mike Brannon via Earth's Internet to build this survival community and provides the funding source via the Lottery. Mike recruits one hundred menage survival members of young, single, educated members to help him build and defend this community. This survival community hopes to remain sequestered for a minimum of two years or until all the rioting and lawlessness runs its course.
Afterwards, they hope to help rebuild civilization. Three of Mike's first recruits are, like himself, Cherokee Indians. He is the business manager in charge of the project, but one of his recruits is a real estate agent and attorney. Another is an accountant, while the third is a marine biologist/botanist. These three recruits all happen to be sisters protecting each other's future survival. Out of necessity due to the unusual survival nature of the situation, they become involved romantically and sexually with Mike.
Much has to be accomplished quickly, and conflict with the outside collapsing society develops even quicker, forcing them ever more dependent on each other. The community of ex-military security, doctors, dentist, farmers, engineers, etc. buys land and builds a "Castle" on the shores of Lake Tinklier in a remote area of Oklahoma. Supplies, equipment, weapons, food stores, and everything imaginable for future survival are stocked.
Even before the final collapse of civilization and roaming gangs, the community must defend their supplies from FEMA intent on taking them.