Caliph Musa Al-Hadi decides to remove Harun Al-Rashid from the rule to be replaced by his own son Ja'far. Despite everyone's objection, Haroun Al-Rashid agrees to step down in order to avoid tearing the nation apart and preserve its unity.
The conflict between the palace's entourage intensifies following the decision to remove Harun Al-Rashid. Meanwhile, Musa sequesters his mother in isolation.
Harun Al-Rashid's mother discovers that someone has poisoned her food.Musa fears that Harun might turn against him.
Musa Al-Hadi passes away and preparations for his funeral are made. Harun Al-Rashid's harem concubine gives birth to a son. Harun Al-Rashid pledges his alliance to Ja'afar, Al-Hadi's son, to become his father's successor.
Harun Al-Rashid acquiesces to the people's desire and decides to take over the caliphate to succeed his brother. People assemble to pledge allegiance to Harun Al-Rashid to assume his responsibilities.
Harun Al-Rashid decides to wed his half-sister, Al-Abbasah (Ulayya bint Al-Mahdi), to her cousin. Worries about Al-Ma'mun ascending to the throne arise and Fadl is enraged that he wasn't assigned any state to rule over.
Harun Al-Rashid's wife Zubaida, a granddaughter of Al-Mansur, gives birth to a baby boy. Harun summons Leith to charge him with searching for A'smaa and her son in Basrah.
Harun Al-Rashid hears the grievances of the people to address them. Harun's mother asks him to declare Al-Amin as the heir to the throne. A crisis arises at the palace. Harun learns the bitter truth of his brother's death.
Zubaida gets mad when Harun Al-Rashid assigns the Greater Khorasan to his son Al-Ma'mun. Haroun Al-Rashid intervenes when he sees his two sons fighting with swords.
Harun Al-Rashid finds difficulty in teaching his son Al-Amin the principles of ruling and leadership. Ja'far miraculously survives an attempt to poison him, and Harun Al-Rashid investigates who the perpetrator might be.
Doubts concerning who might have plotted against Ja'afar arise and Harun Al-Rashid suspects the maid to have done such treacherous act.
Harun Al-Rashid tightens his grip on the palace following the attempted poisoning. A group of bondswomen goes on an arduous journey to reach Harun Al-Rashid's palace.
Al-Abbasah quarrels with Ja'far over the incident with the maid, and he tries to clarify the misunderstanding. Harun Al-Rashid survives an assassination attempt.
When Harun Al-Rashid enters a duel with Ja'far, he feels agonizing pain and the doctor is summoned.
When Harun Al-Rashid is bedridden, many believe that he is at death's door and it is decided that Al-Ma'mun shall be his successor, but Harun gets back on his feet.
Inside the palace, a sword fight takes place between Harun Al-Rashid's men and the followers of Ja'far bin Musa Al-Hadi who intend to overthrow the caliph. Harun Al-Rashid, meanwhile, goes on a trip outside Baghdad.
Harun Al-Rashid enters a duel with Al-Fara'a, the sister of Al-Walid bin Tarif, an oath-breaker. Harun's soldiers capture the other oath-breakers.
Harun tries to put an end to the sedition incited by Abi Essma, as Thaat El-Khal, the chanteuse with the heavenly voice and charming appearance, tries to woo Harun Al-Rashid.
Thaat El-Khal is saddened by Harun Al-Rashid's avoidance of her. Similarly, Al-Abbasah also gets mad at Ja'far Al-Barmaki because she believes him to be in love with someone else.
In his absence, Harun entrusts his son Al-Ma'mun with the ruling. Somaia is pregnant with Ja'far Al-Barmaki's baby. Ja'far plots with Al-Abbasah to get rid of the pregnant harem concubine before Harun returns. Harun appoints Al-Fadl as governor to Greater Khorasan.
Zubaida advises Harun Al-Rashid to hang the Document of Guardianship on the Kaaba's walls. Al-Abbasah sells the pregnant harem concubine.
Ja'far is left in a tough spot when he fails to fulfill the duties assigned by Harun Al-Rashid, and the latter asks him to travel to Damascus to quell sedition and discord.
It is revealed to Diaa that the man she thought was called Saleh is actually Harun Al-Rashid himself. Harun Al-Rashid urges Abu-l-'Atahiya to write a riddle in the form of a poem and promises a reward for anyone who can solve the riddle.
Harun Al-Rashid urges Diaa to participate in the competition to solve the riddle. Thaat El-Khal asks Harun Al-Rashid to leave the palace.
Ja'far fails to subjugate Yahya Al-Talebi to the Abbasid caliphate, and Harun Al-Rashid consults his men about the matter. The Barmakids at the palace get spied on for fear they might cause segregation.
Zubaida manages to solve the riddle. Harun Al-Rashid asks Leith to inform him of the news about all parties.
Harun Al-Rashid prepares to marry off Al-Mahdia. Leith informs Harun Al-Rashid that the Barmakids are about to launch their attack, and Al-Rashid asks him to spread the news at the palace.
Harun Al-Rashid rallies his men and motivates them to defend the city of Baghdad. People sense a growing conflict that might turn into a conflict between Al-Rashid and the Barmakids. Harun sets his harem concubine Diaa free.
A conflict between Ja'far and Al-Abbasah arises. Harun al-Rashid gives his orders for Al-Talebi to be imprisoned. Ja'far intends to overthrow Harun and bring Al-Ma'mun to the throne.
Harun Al-Rashid discusses with Al-Abbasah the matter of wedding her to Ja'far Al-Barmaki. A decree is issued to replace all the Barmakids working in the palace with those loyal to Harun.
The news of Hassan's death leaves everyone devastated. Harun urges his men to defeat the leaders of the Barmakids. Ahmad sells his ring to liberate Sirin.
Aba Hashem thwarts an attempt to assassinate Harun Al-Rashid with a poisonous dagger. Yahya Al-Barmaki is arrested, and orders are given to execute Ja'far Al-Barmaki.