Darius Kellner, a clinically-depressed Fraction Persian, travels to Iran with his family to meet his grandparents. Darius never feels like he fits in - not in school with the Soulless Minions of Orthodoxy, not in his family with his Ubermensch father, not with his non-Fractional Persian relatives - until he meets his grandparents' neighbor, Sohrab. Darius might only be in Iran for a few weeks, but his friendship with Sohrab will leave a lasting impact.