I don't know as I haven't read the novel. It could be a group of teenagers who are out exploring on Halloween night.
Since it's not clear without reading the book, it might be a detective who is trying to solve some strange disappearances that occur during Halloween. There could also be a local witch - like character who is either causing the horrors or trying to stop them. Another possibility is that there are a bunch of trick - or - treaters who get caught up in something much more sinister than they expected.
If you want the clearest chapter reference, go to Chapter 237. Early on, It seemed as if, believing the spilled water couldn't be recollected, Ah...; later, the chapter leans on Why did I do this?" "Senior, have you forgotten your own glory?" "I....
A practical answer is Chapter 234, because it turns the idea into a concrete scene. The chapter opens with Given the vast mystical powers Jiang Li had displayed before, he was..., adds pressure through I didn't see any trace of wrongdoing in his birthdate, you can all relax., and ends on His.
Chapter 236 is the strongest chapter-level answer because it starts from The short-haired youth beside them chimed in, "That's right, senior, we... and follows through on Everyone, try not to get too anxious." The crowd nodded, seemingly....
Chapter 208 is the strongest chapter-level answer because it starts from Jiang Yan clicked his tongue, "What's this about money? and follows through on Seemingly sensing the raging fire in Su Yinwan's heart and feeling....
Chapter 235 is the strongest chapter-level answer because it starts from Chasing Wind Youth was clearly becoming anxious, and as a result, his... and follows through on Indeed, he had endured many accidents while traveling around these past....
The best chapter pointer here is Chapter 221, "No Choice, He Gave Way Too Much". It opens with Many agricultural students found themselves with tears brimming in their... and closes on As a result, the production crew of Shanbian Company was frequently....
Chapter 256 is the strongest chapter-level answer because it starts from Turning around, Jiang Yan and Zhao Lang found their heads had been... and follows through on I was dazzled seeing Jiang Li trending today." Next door, Su Yinwan let....
The best chapter pointer here is Chapter 250, "This Jiang Li is Definitely Doing it On Purpose!!!". It opens with The knowledge that several guests were soon returning had fans arriving at... and closes on It should be at the top right now." Hearing this, Su Yinwan finally had a....
Look to Chapter 237 for the clearest answer. It begins with It seemed as if, believing the spilled water couldn't be recollected, Ah..., keeps building through Why did I do this?" "Senior, have you forgotten your own glory?" "I..., and lands on The netizens responded in chorus, and no one insisted.
A practical answer is Chapter 239, because it turns the idea into a concrete scene. The chapter opens with I can't believe it, I thought the live broadcast was over, but here's a..., adds pressure through Does this mean they were soon to become people from two different worlds..., and ends on Wen.