Multporn

At the dawn of a new age ushered by the inhabitable wastelands conjured by nuclear armageddon, Vault-Tec Corporation launches a clandestine inbreeding program in selected vaults housing mother-son pairs, but only upon entry do they find out the true nature of the vaults. The catch: There's no going back. But between the dangers that lurk the barren lands once green and the relative safety of the corporation's vaults, would they have much of a choice?