In the part called Fly in a Web, you were able to meet an antagonist named Mommy Long Legs. A long adventure through the different areas of the factory awaited you, after which a prototype was partially demonstrated. There was also a lot of interaction with the main character that we’ve released so far.
In Poppy Playtime Chapter 3, it will most likely be more devoted to either all the same doll, or a new character to have a chance to appear. It could be one of those you see on walls, on shelves, or as display stands.
At the moment, it is not known exactly when the sequel can be released. But you may definitely say that the events are going to take place immediately after you boarded the train, which is in the toy factory. Therefore, most likely you will also go to a new part of the building.