Modern girl Li Wan dies in a car accident and transmigrates into the ailing young heiress Gu Yue in the Great Zhou dynasty. Gu Yue's soul remains intact, trapped in a space within her consciousness, where she glimpses Li Wan's past through a screen of light: a world filled with love and warmth. The two go from fighting over the body to understanding and cherishing each other. Li Wan resolves to change Gu Yue's fate of being cast aside by her family and dying horribly in a fire. She helps the heir apparent escape danger, rescues a young heiress from trouble, and gradually turns the tide. But the heroine, Yang Ruan, awakens to memories of the plot and refuses to accept that her fate is changing. She sets a vicious trap to frame Li Wan, causing her family to abandon her at a desolate estate. As Li Wan lies unconscious with a high fever, Gu Yue's soul breaks free and vows to protect her beloved, setting out on the road to revenge. With two souls taking turns in one body to defy fate, can they rewrite the ending together and journey toward a future stretching beyond rivers and mountains?
