An outrageous little test link allowed Wu Shengnan and four other girls to travel to a strange and different world, just like Europe at the end of the last century.
What kind of secrets are hidden in Huili City, where there is almost no law and lawless elements are rampant?
How come Zuo Yao, the funny male classmate I met last night, has been working in the detective agency here for a year and a half?
Everyone's awakened powers happen to be very suitable for investigating. The five strangers, each with their own unique skills, are trying to unlock powers and solve unsolved cases while hugging each other to keep warm in the shadow of swords and swords.
In this world where life is at stake, they have no way out. They can only hold each other's hands and trust each other to open up a way out.
"Either go back alive, or stay in this world forever."
In order to survive, but also to change this dirty world.
Intention: In such a dark world, if you have a kind and sincere heart, you will be rewarded with good things. When everyone was like this, the world wouldn't be such a bad place.