Codex Alera summary: Furies of Calderon (Codex Alera #1) In the realm of Alera, where people bond with the furies-elementals of earth, air, fire, water and metal, fifteen-year-old Tavi struggles with his lack of furycrafting. But when his homeland erupts in chaos-when rebels war with loyalists and furies clash with furies-Tavi 's simple courage will turn the tides of war.