Lou spends his summers at his grandfather Aristotelis' house, who is 2,400 years old and a bit more. Every year, he makes new friends while meeting some of his grandfather's old friends. This year, everyone in the group is eager to meet Pythagoras: Darko wants to chat with him about mathematics, which he loves; Inaya is interested in music and harmony; Theano wants to discuss reincarnation; and Chara... well, for everything. "What on earth was this Pythagoras that everyone wants to talk to him about different things?" Lou wonders. What exactly was Pythagoras? A comic featuring teenage heroes searching for the essence of things behind Pythagoras' thoughts and work.