Pope Eugenius IV orders a pan-European crusade, which he intends to lead by John Hunyadi after the victory at the Iron Gate, but his envoy, Cardinal Cesarini, uses the organization of the campaign to consolidate his own position and begins to gain the trust of the young King Władysław. First of all, by papal order, the identity of the Hungarian ruler must be clarified, and King Władysław and Elisabeth of Luxembourg are forced to reach an agreement. Meanwhile, the succession conflicts in Edirne also intensify, and Murad, who is planning to withdraw, forces Mehmed to act. The second-born son decides to commit a terrible act in order to survive. Władysław almost makes peace with the sultan, but an unexpected tragedy finally triggers the crusade towards Adrianople. Hunyadi again encounters conflict on the political scene when he is confronted with Cesarini's influence over the young king's will. (thetvdb.com)