This is an ordinary firm. The strange thing is that it only appears at 12 o'clock in the middle of the night. No matter you are a human, a monster, a ghost, or beyond these species, as long as it does not violate the rules, it will help you solve any problem.
Yoyo: "I'm back."
Xiaodu: "I'm hungry."
Fei Fan: "..."
PS: Tentative introduction