For a thousand years, Xu Wenwu has shaped human history from the shadows. The Ten Rings are not just an organization—they are actual rings, artifacts of immense power that grant immortality and devastating force. Wenwu has toppled governments, built empires, and outlived everyone who ever opposed him.
Then he met Ying Li.
She was a guardian of Ta Lo, a mystical dimension accessible only through a shifting forest maze. Wenwu came to conquer. Ying Li defeated him without the rings, using martial arts he had never encountered. They fell in love. He put away the rings, abandoned his empire, and became a father to Shang-Chi and Xialing.
When Shang-Chi was seven, assassins murdered his mother. Wenwu retrieved the rings and spent years training his son to be a weapon. At fourteen, Shang-Chi was sent to kill his mother's murderer. He succeeded—and then he ran, spending a decade in San Francisco as "Shaun," parking cars with his best friend Katy.
The film opens when his past catches up. Wenwu's soldiers attack Shang-Chi on a bus, seeking the pendant his mother gave him. The bus fight features Shang-Chi defending passengers while the vehicle careens through San Francisco. Katy, who had no idea her friend was a martial arts expert, is shocked.
Shang-Chi's sister Xialing has the matching pendant. She has built her own underground fight club in Macau, angry that their father trained Shang-Chi but ignored her. The siblings reunite just as Wenwu captures them both.
Wenwu believes Ying Li is alive, imprisoned in Ta Lo. He has been hearing her voice calling to him. He intends to tear open the gate to Ta Lo and rescue her.
He is wrong. The voice is not Ying Li but the Dweller-in-Darkness, an ancient evil imprisoned behind the gate of Ta Lo. Wenwu's grief has been manipulated. The entity is using him to secure its release.
The climax in Ta Lo features the Ten Rings army versus the guardians of the village, with Shang-Chi wielding his mother's fighting style and Xialing demonstrating her combat skills. A dragon assists in the battle. Wenwu realizes his mistake too late. The Dweller escapes. Wenwu gives the rings to Shang-Chi and dies holding back the creature.
Shang-Chi destroys the Dweller with the combined power of the rings and Ta Lo's Great Protector dragon. He inherits his father's weapons but chooses his mother's path.
The mid-credits scene shows Wong summoning Shang-Chi and Katy to Kamar-Taj. Bruce Banner and Captain Marvel examine the rings via hologram. The artifacts are ancient with unknown origins, and they are sending a signal.