Itsuki Tachibana is just one of the many students at the illustrious Seiga Academy. However, his life changes completely when the lovely Rina Izumi, Seiga Academy's flawless student council president, hand-picks him to be her vice president! There's just one catch: in order to completely fulfill his role, Itsuki must master the online game PSO2, or Phantasy Star Online 2! As Itsuki takes his first tentative steps into the game, little does he know the secrets that lie in wait for him…