A race of aliens has come to Earth with the intentions of laying low. They are on the run from another alien group, this one bent on their destruction, so all they want to do is avoid detection and go about their business. However, their plans go awry when one of their number accidentally gives away their position. Now that alien is on the run from his own people as well as the hostile aliens, taking refuge with a teenage girl who seems to understand him very well despite their differences. As the two of them embark on a globe-trotting adventure together, both of them will discover a great deal about what it really means to be human in such a strange and confusing world.
