Out There - Book One: Paradise
by David Gordon
The world is running out of water and Sami's father has disappeared. Everything is bad. Then everything changes. Brian, alien from the planet Adonae, arrives and becomes Sami's only friend. When the government orders the aliens rounded up, Sami and her frenemy, Alejandro, save Brian. But they need to get him back to Adonae, while running from police, parents, and a very dangerous goon.