The Demon Sect sent Pei Wuwang to infiltrate the righteous path and await orders.
Six years later, the orders came:
Kill the new alliance leader and seize the iron case containing the old case files.
That same day, the seven sects selected him to become alliance leader and investigate the old case.
The man he was supposed to kill was himself.
The case he was supposed to investigate concerned him.
The mole he was supposed to catch was also himself.
Pei Wuwang decided to stabilize the situation first.
As a result, the righteous path trusted him more and more, while the Demon Sect grew increasingly suspicious of him.
And the woman who specialized in investigating moles had already begun asking him:
"Alliance Leader Pei, how do you always know where they'll break in?"