Two urban women with completely opposite personalities, one is innocent and loves first, the other is independent and strong, and loves herself the most. After having a relationship in modern times, they traveled to the Qing Dynasty together, but why does one of them not know that the other exists in different time and space? Four and fourteen, who is their lover? Give it a try to time travel. If you don't try, how will you know who is your true destiny between Four and Fourteen?