Su Muxi is the daughter of a military family. She marries Chong Yuan and becomes empress, not for love, but to protect her family. She behaves herself in the heavenly palace, while secretly plotting a way out and harboring ambitions to seize power. Chong Yuan sees through her scheming and remains cold and wary toward her, yet whenever danger strikes, he always steps in to protect the Su family. It is nearly impossible for the divine race to conceive a child: it requires a thousand years of true devotion. But the two of them are suspicious of each other, making that impossible. The emperor and empress share a palace, yet each has their own agenda. Amid the power struggles of the Ninth Heaven, they strive to protect their families while quietly developing feelings they should never have.
