As an evil takes over the world beyond their front doorstep, the only protection for a mother and her twin sons is their house and their family’s protective bond.

Ebony Jackson, a struggling single mother fighting her personal demons, moves her family into a new home for a fresh start. But when strange occurrences inside the home raise the suspicions of Child Protective Services and threaten to tear the family apart, Ebony soon finds herself locked in a battle for her life and the souls of her children.

Reformed ex-convict Walt Manigan returns home to rebuild his family with the love of his life, Ketta. His path leads him to a boxing gym inside a D.C. youth recreation center about to be closed. There, he works under the wise coach Slim to mentor a group of boys to train for the junior national boxing tournament, all leading to a showdown between best friends Quincey and Peanut as they battle for a spot on the U.S. Junior Olympic Team.

An inside look at the years of effort and craft that went into the final installment of the Duffer Brothers' generation-defining series.