Twelve-year-old Shang-Chi and and his younger sister, Shi-Hua, are the only children in the grand palace of the Five Weapons Society. Their father, Zheng-Zu, is a harsh master, and all Shang-Chi wants is to prove himself in his father's eyes.

So when he overhears that his father's powers may be waning and discovers an ancient scroll that might be the key to helping him get those powers back, Shang-Chi knows exactly what to do. For the first time in his life, he sneaks out of the palace and into the outside world, hoping to return with one of the legendary Peaches of Immortality to gift his father.

But the world beyond the palace is very different from everything Shang-Chi has been taught, especially a boy called Lu, who knows more about Zheng-Zu than he should. With his home and father's health on the line, Shang-Chi cannot fail in his quest— but does his father deserve to be saved?