After an alien spacecraft crash-lands in her small town, a 6-year old Emery Whitehill has an encounter with Roman, a 6-year old Atrian boy. Ten years later, Emery (Aimee Teegarden) and Roman (Matt Lanter) are reunited as the first group of Atrian teens enrolls in a human high school with the goal of testing the feasibility of human/alien integration.