It is about Eleven (El) (Jane) Hopper, Maxine (Max) Mayfield, Billy Hargrove, William (Will) Byers, Joyce Byers, Janthan Byers, Dustin Handerson, Michael (Mike) Wheeler, Lucas Sinclair, Kail (Eight) Prasad, Nancy (Nance) Wheeler, Holly Wheeler, Erica Sinclair, Steve Harrington, Suzie, Robin Buckley, Heather Holloway, Jim Hopper (Hop), Bob Newby, Murray Bauman, Susan Hargrove, Neil Hargrove, Tommy H, Carol, Gorgie, Barbara (Barb) Holland, these group people know a girl name Gold she have powers, she have long uneven rainbow hair, she can change the colors of her eyes with any mood that she is in, she is Billy's blood sister and bestfreinds with him. She is dating Tommy H and friends with Carol. She does a lot of things with Billy but she does not drink alcohol or smokes but she cares for him a lot and she hate Billy's father Neil but she love Billy's step-mother Susan who is Max's blood mother, she is close to Max even if Billy is not close to her. Then they found out that upside down is back and if want to know what happen you just have to read the book.