After accidentally time-traveling to ancient times, Harper Sterling becomes a candidate for Crown Princess. Guided by her memories, she must find a jade pendant to return home. Framed by villains and kidnapped by the Crown Prince, she is rescued by Nathaniel, and the two soon fall in love. The couple journeys south, surviving hardships and multiple assassinations. They outsmart the Crown Prince's faction, foil his schemes, and save the dynasty. Ultimately, they have a child together and successfully reunite after time-traveling back to the modern world.