Mark Lewellyn is an overweight, forty-something couch potato leading a life dominated by computers, television, and an array of other electronic gadgets: in other words, the typical modern man. Outside in a rainstorm, Mark is struck by twin lightning bolts that steal him from his lazy suburban slumber and propel him back into stone-age America. The absence of a McDonald's and K-Mart on every corner proves to be the least of Mark's troubles, as he's forced to confront the very essence of life: basic survival. Suddenly he faces buffalo herds, bears, floods, primitive villagers and warring Indian tribes. This is not only a thrilling story of great adventure, but also the fascinating evolution of a nobody lost in modern anonymity who becomes a man.