The cydonian pyramid

Nearly a thousand years in the future, a sheltered and spoiled girl named Lah Lia was raised for a single purpose--to be sacrificed into the mysterious spacetime diskos that hovers over the Cydonian Pyramid. Just before she is killed, however, a strange boy appears from the diskos, and helps her escape. Now her fate and the boy's--Tucker Feye--are inextricably linked.