Earthborn

Nesta Gwynn has always known that her parents are different. She thinks it's because they're from Boston instead of the little town in England, where Nesta was born and where she's always lived. But at the age of 12, Nesta discovers that her parents aren't really from Boston. In fact, they're not from Earth at all. They're aliens from a planet named Ormingat and, even though she was born on Earth, Nesta is an alien too. To make matters worse, her parents's mission on Earth has come to an abrupt end because of a boy named Thomas Derwent. They will have one chance to return to Ormingat and it's only seven days away. Nesta quickly devises a plan so that she'll miss the deadline and not have to leave Earth. But if she stays behind, will her parents choose to stay with her or will they go back to Ormingat without her?