Prince Xiao Shu He wants to maintain his distance from the political theatre of his nation as orchestrated by prime minister Gu Xiang and the Crown Prince, but one night his home is invaded by an assassin. He soon runs into an injured Duan Ziang, his former childhood friend, but Duan Ziang seems to have his own objectives that may or may not involve the Nan Hui Kingdom.

Xiao Shu He and Duan Ziang become closer through music, but news of someone staying in the Sixth Prince's residence slowly spreads throughout the court. The Crown Prince secretly orders Huo Ying to assassinate the Sixth Prince within seven days.

Xiao Shu He meets with the Crown Prince, where brotherly respect masks hidden doubts and distance. Afterwards, Shu He drinks with Duan Zi Ang, confessing his conflicted feelings toward the Crown Prince, while Duan Zi Ang comforts him.