From a Tectuendart still under reconstruction, together with the project of a deadly weapon, Myrva and another technocrat disappear. Worried about his sister's fate, Ian joins Briana on a long research journey that will take them to the Mountain Enclave. Between Olhim's fierce sons and the menacing dwarves, the two will find themselves contrasting the violent ambitions and delusions of omnipotence of General Ocran, ready to set fire to what remains of the Erondàr to obtain "a greater good"!