"It's Halloween night, 1984, in Coventry, Massachusetts, and two families are unraveling. Up and down the street, secrets are being revealed, and all the while, mixed in with the trick-or-treaters of all ages, four children who do not belong are walking door to door, merging with the kids of Parmenter Road. Children in vintage costumes with faded, eerie makeup. They seem terrified, and beg the neighborhood kids to hide them away, to keep them safe...