John rents a unit at Hamden, a complex of underground storage containers converted into fallout shelters. He's happy having a place to live, but his ambitions are stirred by his neighbor's daughter Leia, the most beautiful girl in Hamden.Bob forbids her from spending time with men, as he wants her to remain chaste until after they return to the surface. He's particularly strict about John, seeing him as a threat to her purity.John's longing turns to agony as he lays in bed alone at night, knowing the woman he desires is right next door. When Leia comes down with the heat, Bob ties her up, leaving her bound and gagged in her shelter alone while he goes to work. She calls out for John, begging him to come save her, and give her relief from the pounding pressure, and desire for touch.Free Use in Heat involves an older man and a younger woman, hyper-arousal, adult nursing, free use, a first time, and a forbidden pregnancy.