The exchange kids exchange back to their original worlds for some much needed father-and-son time. However distance has not made respective hearts grow fonder. Principal Rogerson's son Leroy returns from his stint as an exchange student on Zero as a power-mad warrior determined to take his father's crown and the school with it. Meanwhile. Hiro has his hands full with an emotional Karuta after he pushes the "feelings" button a little too hard. John and Max have to wade through the mush and angst to set things straight.