1. Xiao Zhan plays Wei Wuxian. Wei Wuxian is determined to fight against the strong and support the weak throughout his life, and he has no regrets in his heart. Because Yin Tie was involved in the dispute, Lotus Pier was destroyed by the Wen family, and he was also thrown into a mass grave by the Wen family. Wei Wuxian struggled to build the Yiling Patriarch, and killed everyone in the Sun Shooting Campaign. The Wen family declined. Because Wei Wuxian possesses the Yinhu Talisman and protects innocent people of the Wen family, he is in opposition to the family. Later, Wei Wuxian was framed and his senior sister died tragically. In despair, Wei Wuxian jumped off a cliff and committed suicide. Sixteen years later, Wei Wuxian was resurrected and worked with Lan Wangji to explore and uncover the truth.

2. Wang Yibo plays Lan Wangji. Lan Wangji is the second son of the Lan family in Gusu. A man of few words is bound to break out in any chaos. When the family went to the Lan Sect to study, Wei Wuxian repeatedly broke the rules of the Lan Sect, and Lan Wangji did not like Wei Wuxian. After experiencing various incidents, Lan Wangji changed his view of Wei Wuxian and grew in his thinking about right and wrong. After Wei Wuxian jumped off the cliff, Lan Wangji was punished and imprisoned for three years. After that, he often went down the mountain to look for traces of Wei Wuxian. Sixteen years later, they finally reunited and joined forces to investigate and uncover the truth.