Its actually a well written show, but you need to pay close attention to fully get everything. Its not the type of show where you can watch while scrolling through Facebook or responding to a text. A lot of the most hardcore fans have watched the series multiple times to be able to pick up everything going on, both in the forefront and the background. The kind of show that makes you think.
Very generally speaking, the first season is about people who have near death experiences and are held captive. After Prairie escapes, she enlists the help of the supporting cast to open a portal to another dimension which is the only way to save the remaining captives. In season 2, Prairie transports herself to another dimension to find her captor from season 1. The supporting cast from season 1 try to help her but are operating from a different dimension. The dimensions cross paths with the search for the missing girl by the P.I.