It's the early 90s, the first day of school and a terrible start for 16-year-old Erin as she wakes up to find her cousin Orla reading her diary. And Granda Joe announces there's a bomb on the bridge.
Erin is so excited that teenage Katya 'a child of Chernobyl' is coming to stay, but Katya is not exactly grateful to be in Derry. And there's developments in Granda Joe's love life.