A family give up their modern lives for one summer to experience what life was like for Caribbeans who immigrated to Britain in the postwar period.

Beginning in 1948, the year the Empire Windrush arrived at Tilbury and discharged its passengers, the Irwin family travel through the 1950s and 60s, guided by presenter Giles Coren and social historian Emma Dabiri who introduce them to their new homes as well as the events of the time. Along the way the Irwins discover the food, work and entertainment of first-generation immigrants making their lives in Brixton.