Seventeen-year-old Ava Kanaly has spent her entire life running—from HYDRA, the Grabber, and the family she lost. After finally building a normal life in Hawkins, everything changes when her Denver friends unexpectedly return and the Avengers accidentally discover the daughter they've spent eight years searching for. Now Ava's three worlds are colliding, old feelings are resurfacing, and someone dangerous may have brought them all together on purpose.