The Dark Tower beckons Roland, the Last Gunslinger, and the four companions he has gathered along the road. In a terrifying journey where hidden dangers lie at every junction - a malevolent runaway train, Roland's staunch enemy and the temptation of the wizard's diabolical glass ball - they narrowly escape one world and slip into the next. It is here that Roland tells them a long-ago tale of love and adventure involving a beautiful woman named Susan Delgado.