About Gwen Byers act 1

What happens when not one..But two Byers kids go missing in less then a week.In searching for her missing twin brother will.12yr old Gwen Byers ends up in the same place as him.Also meeting a new bald party member?What happens when the Byers kids are back not fully the same,Lost and gained a new best-friend and party member also while having a new threat. What happens when a new mall opens up in the summer,And 14yr old Gwen Byers and her new found group crack a Russian mystery and whatever lies beneath star court mall. What happens when the Byers move to California to start a new life and Gwen ends up in the same place she couldn't get away from? What will be the outcome?