Enigma City was a mysterious city that vanished one night with no records of what happened. However, one thing was for sure—no city could have vanished without a trace.

Adrian said, "Enigma City didn't vanish, but probably sank. It was probably caused by the soil the city was built on and the Earth’s crustal movements. Enigma City might be just below our feet. The mirage in the desert was probably conjured by the city."

The other three looked at each other upon hearing this.

Mya replied, "Enigma City is a mysterious place. It’s said that its residents could summon and control the dead during a fight. We don't know how or why they vanished, nor do we know where to begin our investigation. But you might be right about the city sinking due to natural causes. There are probably many things we're still unable to understand right now."

Adrian nodded and was quite confident in his theory. He got up and said, "Let's go to the passage and have a look. It should be one of the entrances in