In the underworld, Meng Po and the King of Hell were both kings and gods of the heaven. The two fell in love but hurt each other for some reason. Meng Po therefore swore an oath not to remember any of the past and fled to the underworld. The King of Hell also followed her into the underworld. However, ten thousand years later, the dusty past will eventually be remembered, and the unforgettable resentment actually hides shocking secrets and misunderstandings...