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 over the moon when she becomes editor of the school magazine, Orla's obsessed by step aerobics, and Da Gerry is in trouble with Ma Mary. And there's romance for Aunt Sarah.