All the Time in Our World — Samuel Ben White

Two nervous west Texas teenagers on their first date are suddenly engulfed in a horrific thunderstorm and take shelter in an old barn. When the storm subsides, the barn is gone … and so is everything else, except their bicycles. They ride their bikes on a mysteriously well-maintained road in an otherwise barren land to an ancient castle whose single resident claims to already know them. Edward and Marianne have been whisked thousands of years into the future and their only hope of returning to their own world and time is to follow a mysterious traveler named Marcus and a hulking warrior named Daniel into a battle for the soul of all mankind. Over almost a year's time and more than a thousand miles of travel, Edward and Marianne are trained “physically and mentally” to put together and lead the army that will fight the battle for the beginning of the end of the world. As Edward is taught to be a general and a sword-fighter and Marianne learns to use a bow and lead as well, they begin to learn that their greatest asset just may be each other.