It's Belfast in 2019 and despite more than 20 years of peace, scores of so-called peace walls continue to separate Catholic and Protestant neighbourhoods. Jean Beattie's grief turns to anger when police refuse to open the peace gate at the end of her street to allow her best friend's funeral procession through to her church on the other side of the peace wall. The gate remains closed because local youths, led by Sam on one side and Seamie on the other, are recreational rioting. Comforted by her friends Roberta, Bridget and Patricia from the cross-community pensioners' club, Jean vows the gate will be opened. On the 50th anniversary of the erection of the peace walls, in the era of Brexit and Trump's border wall, the themes in Tony Macaulay's laugh-out-loud novel resonate far beyond Northern Ireland.