On the Lantern Festival night of the eleventh year of the Tianbao reign of the Tang Dynasty, the wandering young man Han Chengye encountered a mysterious noblewoman in the prosperous city of Chang'an. Three years later, the An-Shi Rebellion broke out. Where would fate throw these two unlikely couples? Players will experience a series of events in the lives of multiple protagonists and be thrust into the most brutal defense of a city in ancient Chinese history. Defend it, save it, or flee? The choice is yours.