In fall 1984, cody finds himself the target of the Upside Down as a large tentacled entity called the Mind Flayer soon terrorizes the citizens of Hawkins once again and possesses him, drawing back mary and chris along with Cody's friends Trent,Owen and Brody, Trent's sister Courtney, cody's brother junior, and courtney's boyfriend Tyler. The whole group along with Californian newcomer Dawn and a missing Heather must join forces once again to prevent the threat from increasing.
