Apocalypse Countdown: Building the Ultimate Fortress with My Brother

When a scientist returns from the brink of hell with memories of humanity's extinction, he has one chance to rewrite fate. Armed with a genius-level intellect and his fearless adventurer brother by his side, they race against time to build an impenetrable sanctuary while the world laughs at their paranoia. But when the apocalypse strikes and desperate survivors come knocking, the real test begins—especially when an elite military force arrives with sinister intentions that have nothing to do with rescue.