After spending seven years away from Riverdale, Archie returns to find the town is now under Hiram Lodge's grip and on the verge of becoming a ghost town. When Toni catches him up on what's been going on, Archie reaches out to the rest of the gang to return home.

A vengeful spirit from folklore, la Llorona arrives in Rivervale to terrorize the rainy town. Betty and Toni find themselves in the specter's path and must seek Cheryl’s help to protect the children in Rivervale, including Baby Anthony. Meanwhile, Jughead and Tabitha, along with Veronica and Reggie, experience their own hauntings that begin to put a strain on their respective relationships.