SON OF SINBAD

In ancient Baghdad, the poet Omar Khayyám searches for his friend Sinbad, the son of the legendary sailor, and finds him outside the palace of the Khalif. Although a reward has been offered for Sinbad's capture, he sneaks into the palace undeterred and recites Omar's poetry to woo Nerissa, a harem girl. When a slave exposes him, both Sinbad and Omar are apprehended and brought before the Khalif.

Also on trial are Greek scholar Simon Aristides and his daughter Kristina, a childhood friend of Sinbad, who have been falsely accused of theft. The Khalif orders the execution of all four, but his advisor, Jiddah, urges him to first meet Murad, an ambassador of Tamerlane whose invading forces threaten the city. Murad demands hospitality while his troops prepare for an attack.

To save Kristina, Sinbad reveals that Simon possesses the secret of Greek fire, an explosive formula. Simon agrees to demonstrate the weapon in exchange for freedom for himself, Kristina, Sinbad, and Omar. The Khalif consents—though Sinbad and Omar remain imprisoned. During the demonstration, Simon hypnotizes Kristina to recite the formula. Unbeknownst to them, Jiddah and Murad secretly observe but are unable to identify the chemicals being used.

Impressed, the Khalif agrees to release Sinbad and Omar the next morning. Kristina confides in Ameer, who is in love with Sinbad, asking her to inform him of his imminent freedom. Despite her jealousy, Ameer delivers the message. However, she later discovers that Kristina has been abducted and Simon murdered. Murad has taken Kristina and the chemical bottles. Before being captured by Jiddah, Ameer sends a warning via carrier pigeon.

While torturing Ameer for information, Jiddah discovers a tattoo indicating her connection to the Forty Thieves—a legendary group once led by Sinbad's father. Ameer confirms their descendants remain active, leading Jiddah to suspect the warning was sent to them. Meanwhile, Sinbad and Omar escape their cell and confront the Khalif. Sinbad offers to rescue Kristina in exchange for gold, a pardon, and the promise of becoming second in command. The Khalif agrees, unaware Jiddah has alerted Murad.

In the desert, Ameer finds Sinbad and Omar and reveals Murad is traveling with disguised Tartars posing as merchants. The Forty Thieves plan an ambush at the caravan's first camp. Sinbad hides underground near the camp, intending to infiltrate Kristina's tent. When Murad unwittingly removes Sinbad's breathing reed, he is forced to emerge but manages to rescue Kristina.

The Forty Thieves—revealed to be all women—launch a surprise attack and reclaim Simon's chemical bottles. At their hideout, Sinbad uses the command "open sesame" to enter with Kristina and Omar. The Thieves' leader, Ghenia, grants refuge. Kristina confesses her love for Omar, while Ameer rejects Sinbad's advances due to his wandering affections.

Murad's forces soon besiege the cave. Sinbad hypnotizes Kristina to recall the Greek fire formula. With the Thieves’ help, he creates the explosive and defeats Murad's army in battle. Sinbad slays Murad in a duel, and peace is restored. He persuades the Thieves to accompany him to Baghdad and make peace with the Khalif.

At the palace, the Khalif prepares to punish Sinbad for failure, unaware of Jiddah's betrayal. When Sinbad arrives with Kristina and the victorious raiders, the Khalif embraces him and orders Jiddah's punishment. Omar is appointed royal poet, the Thieves are pardoned, and Sinbad is named second in command. He then proposes to Ameer, asking her to be his bride.