Shangguan Qing's family was exterminated when he was young. He narrowly escaped death and wandered around. He saved a little girl Fu Yao. Fu Yao's family thanked her for saving her life and let her stay in their house. Therefore, she joined a mysterious assassination organization in the house. He met Xiao Yuan in the organization, grew up together, and became brothers. During an assassination mission, the three met Zi Liuli, a mysterious tribe woman. Shangguan Qing fell in love with Zi Liuli, but Xiao Yuan blocked their relationship. In order to keep Shangguan Qing by his side, he used his power as a prince to remove Shangguan Qing from the organization and keep him by his side. Unexpectedly, there was another bloody turmoil in the world. Shangguanqing returned to the world again and fought hand in hand with Zi Liuli, and their relationship became even deeper. Xiao Yuan was unwilling to give up, and after several twists and turns, Fu Yao also died. In the end, Xiao Yuan forced Shangguanqing to make a choice, the love between brothers or the love between men and women, how Shangguanqing chose...