Riverdale remains on edge after a chilling letter from the Black Hood challenges the town’s residents to remain sinless for 48 hours – or he’ll strike again. Meanwhile, Jughead and Archie’s friendship gets tested after Penny Peabody unexpectedly calls in a favor that Jughead owes her. Elsewhere, Betty and Veronica team up to investigate someone who Betty thinks could be the Black Hood killer. Finally, things take an unexpected turn for Josie when a secret admirer takes things one step too far.

When Jughead learns that FP is getting released from prison, he and Betty organize a welcome home party with the Serpents to ease him back into his former life. Meanwhile, Archie and Veronica reach a crossroad in their relationship, but are forced to push their issues aside after Jughead and Betty ask them to take over the Black Hood investigation.

After snooping around for Christmas gifts, Veronica uncovers a major secret Hiram has been keeping from her. Fallout from Jughead’s encounter with Penny Peabody creates tension between him and FP. Meanwhile, a defiant Cheryl takes matters into her own hands after Penelope tells her they cannot afford Christmas this year. Finally, Betty and Archie’s vow to take down the Black Hood once and for all leads to a dangerous showdown.