In the desolate wasteland of Fallout 4, a resourceful brother and sister find solace in each other's company - and bodies. As they explore the remnants of their crashed XBOX ONE, they stumble upon a mod that brings their sexual fantasies to life. The brother, his cock throbbing at the sight of his sister's luscious curves, leads her to a makeshift bed in the ruins. She eagerly spreads her legs, revealing her wet, eager pussy, as he plunges into her, fucking her roughly in their post-apocalyptic haven.