Time is a funny thing. We can't control it. It's there, and then it's gone. But, what if we could control it? What if somebody built a time-traveling machine, able to take you anywhere, or anywhen? It all began, when two cousins, Ariel and Sara, became fascinated with the idea of time travel. Then, one evening, a strange woman arrives at the door, offering them information from the future, as well as items to assist them in building their own time machine, which they do, in a stone shed in their own backyard.Then, something goes wrong, and the girls become trapped in a time that is not their own. Will they return? Will their future be the same if they get there? Find out in this exciting sci-fi adventure from the author of "Forever-Immortal."