Avarii and the boys are in Hawkins when Avarii is close friends with max hargrove, Mike wheeler, eleven, Lucas, Dustin, will, Nancy, Steve, Johnathan, robin and Erica. And at some point Avarii gets kidnapped and taken to the upside down (or the bridge between Hawkins and whatever it is) and the boys and avariis other friends try their absolute best to get her back, and she’s being controlled by vecna. And the rest of the story when she gets found and alsmot dies, and how she’s vecnas tether, meaning that she has powers. And other things happen (stranger things type of things) and the boys are VERY OVERPROTECTIVE OF AVARII. AND CARE AND LOVE HER VERY MUCH