For many years, Alastair and his best friends Danny and Simon have spent summers together with their families at his gorgeous holiday home, Linston End, against the idyllic backdrop of the Norfolk Broads. The memories are ingrained in their hearts: picnics on the river, gin and tonics in the pavilion at dusk, hours spent seeking out the local swallowtail butterflies. There's no reason to believe the good times won't continue down the generations, though there are surprises in store for them all... After Alastair's wife Orla passes away in a tragic accident, he goes travelling - and when he returns, it's not just adventures and memories he brings back, but Valentina, his new love interest. Is this just a holiday romance? What will Alastair's decisions mean for the long-time friends?