Codex Black (Book Two): Bird of Ill Omen

Set in 15th-century Mesoamerica, the story follows Donají and Itzcacalotl as they seek answers about Donají's missing father from the Oracle of Lyobaa. Their journey unexpectedly transforms into a mission to thwart the assassination of Emperor Ahuizotl. Confronted by a shadowy group of assassins intent on plunging the world into chaos, the duo must navigate danger and intrigue to protect the empire.