Superman and Batman related
Under the steel forest that has been entrenched for hundreds of years, there is a silent and criss-crossing underground ecology, and the cold south wind blows towards the best partner who accidentally entered the paradise world.
Why is there a paradise spreading warmth underground in the depressing Gotham City?
Why are the citizens of the bright metropolis mysteriously missing?
The savior who lost his power, the detective who went astray, the police chief in crisis, the fugitive who cannot be traced...
Everything is in paradise - the paradise without exit.