The story is interesting and suspenseful from the very beginning.
The grammar is great.
The spelling is great.
You even have a great choice of words, using rich vocabulary.
You presented an original idea not used often.
I don't have any negative comments. Using the time as a name for the chapters was also one of the traits I liked in it.
Overall the story is very interesting, it's a must-read. One of the greatest I've seen on wattpad. I'm definitely going to continue it.
Keep it up.