Yun Jin, the law enforcer of the fairy clan, was ordered to imprison the old enemy Demon Lord Ye Wuhen. The soul power cage he carefully woven trapped the fate of the two people and the taboo truth from a thousand years ago. When faith collapses, the darkened law enforcer becomes an accomplice with his arrogant sworn enemy. They are each other's prisoners and each other's key. In the chess game that subverts the three realms, they use their bodies as a cage to imprison the lies and madness of the entire era.