The start map is : ,,MainMenu'' If you have the Hello Neighbor: Old Art Style Content Pack (Extended) by RandomPerson189 not installed, then the textures will not be displayed from the (old art models) My english is not the best.
You are a completely normal resident who wants to move out because your neighbor has become strange. You found out that the strange neighbor is following you. The neighbor has locked someone in his basement and you have to find out what the neighbor is hiding.