Anna and her twin brother are a little lost. In time. Oh, there not really lost, there are a few familiar faces around. Her parents for instance. But its different when there 17 and can't know a thing, other you risk altering the way of time. And there also Charlie Fletcher, the boy who is arrogant and conceited one minute and soft and gentle with Anna the next. But she can't let herself fall in love when she's got to figure out how to get back to her own time before its to late.