With the Founders’ Day dance approaching, Addie must find a story from Juniper’s past that the town can all be proud of. Bonnie lets Addie know that she has a story that fits the bill. Nina struggles with her options for college.

The Darrow sisters' sleepover turns chaotic when Bonnie seeks to disrupt their perfect image. Addie uncovers a WWII code-breaking story linked to Verity Loveday, raising questions of truth and loyalty.

Addie seeks confirmation of the Codebreakers story for the Founders’ Day event. Miriam's reluctance gives way to a touching revelation.