Believing that over-civilization was destroying the race, Eli Tapper, an eccentric millionaire, took two unrelated orphan children, a boy and a girl, and placed them in a wilderness, there in the care of an old tutor, David Winters, to grow up as a new Adam and Eve, and become path-breakers of a better race.

Edward Thursfield, chief engineer of the bridge building firm of Henry Killick and Company, is building the largest concrete bridge in the world. Employed in the New York office is a young man named Arnold Faringay. Arnold sees an opportunity of using money from the payroll for a big deal.