A girl is killed, and Zhao Yunlan is put on the case. He speculates that another student, Li Qien, is the real target, and is intrigued by a reserved Professor by the name of Shen Wei who knows more than he's willing to share.

When Li Qian's grandmother passes away Zhao Yunlan and Shen Wei is pushed together to figure out what it all means. Suddenly, more Dixing people appears on Haixing and a Sundial pendant reveals the truth in more ways than one.

A student is found aged and dead at the campus, while a university assistant is behaving strangely. A girl with gloves is somehow connected to the case, and Zhao Yunlan has to piece it all together before it's too late.

A woman is murdered and found without her face, and when Zhao arrives on the scene he finds Shen Wei already there. The woman's friend, Lin Yusen, claims he saw the killer and is determined to avenge his loved one.

Huang Linqi, son to a very rich man, suddenly disappears one night. Soon followed by his betrothed Li Jiaqi. Zhao suspects butler Wu knows more than he's saying, and behind the scenes a plot to cover it all up is being orchestrated.

Whan Zheng is having vision of her life before SID. On the way northwest SID runs into Shen Wei and his students, and together they head up the mountain. They're told about the Hanga tribe, and Wang Zheng recovers her memories.

The kidnapper is caught, but SID must deal with the consequences of their plan. Zhao takes the responsibility and the punishment, but before anyone can react the holy tools are at risk and Zhao comes face to face with the real mastermind.

Zhao finds the traitor in SID and keeps working to protect the people of Dragon city. Meanwhile, Ye Zun is working behind the scenes very efficiently. Down in Dixing, Shen Wei is betrayed and has to deal with the situation the best he can.

An agonizing waiting game begins, and tempers are flying left and right. Zhao tries to contact Shen Wei repeatedly, but no answer. While this is going on, an enemy is plotting to mess with their heads and Zhu Hong is the first victim.

Rumors about SID is damaging their reputation in the public eye, and SID tries to do damage control. The biggest target of both the rumors, and their enemy's game, is Chu. Zhao orders Guo to follow Chu, but it's a decision he'll regret.

To live with the consequences of his actions is something Chu learns the hard way, but Zhao refuses to give up and fights back. He enters Dixing, infiltrating their guards, and brings back a badly wounded Shen and Guo to SID.

While Shen and Guo are recovering, a powerful enemy takes the center stage. Zhao isn't easily tricked but is forced to move against him prematurely. This takes Zhao to a place of realization and understanding he never thought was possible.

This is the story of how it all began, and Zhao is fascinated to discover his role in it. The kinship he always felt towards Shen Wei was real and true, but everything is overshadowed by a declaration of war coming from Dixing.

Both parties are rallying forces to their side as things start to heat up. Ye Zun and Zhao are both using their wits to try and outplay the other, but it won't stay that way. Soon, forces will move that will change things forever.

The four holy tools are gathered, and the SID team prepares to make their move both above and below ground. The Yashou tribes must be dealt with, as must the situation on the human streets, but the worst chaos is down in Dixing.

A hatred that lasted for 10 000 years finally gets to express itself, but on the other side there's love that lasted just as long. This is the endgame between these two powerful forces. How far will they go to reach their end?

There are heavy losses on all sides, because war is never a pretty picture, but the most painful situations are the ones you must witness without being able to affect or change. Some sacrifices were destined from the beginning.

The war has ended, with no winner, and those still standing will deal with both heart-break and new beginnings. Only a promise remains, of being guardians forever. A promise to follow each other, no matter what happens, into the future.