The next novel from One Day author David Nicholls is inspired by his European travels while promoting the 2009 success.
One Day went on to sell over 5 million copies, with Anne Hathaway and Jim Sturgess starring in the 2011 movie adaptation.
Set for publication on September 30 in hardback format, Us deals with Douglas Petersen, husband in a failing marriage and troubled by his relationship with his son.
With his wife, Connie, planning to leave him after their son leaves home, there's one last vacation to get through, a family holiday touring Europe's major cities.
That's the platform for David to face up to the man he's become, make good with his son, and rediscover his wife as the woman he first fell in love with, two decades prior.
The publicity tour for One Day afforded Nicholls the chance to visit "all the extraordinary places that I'd have loved to have seen as a back-packing teenager but never got the chance," he said.
Publisher Hodder & Staughton's announcement revealed several key themes for Us: living together, parenthood, the relationship between reason and emotion, art and science, parents and children, middle-age and youth.
"Us is a road-trip, with all the pleasures and disasters of a long, difficult journey," Nicholls elaborated. "It's a love story of course, and I hope there's the same mixture of comedy and drama that I've strived for in the other books. But it's also about family -- the bond of marriage and the demands of parenthood."