Six fascinating and touching diaries are discovered in an old rooming house that detail the lives of the owners and tenants spanning over a century of change in Chicago's Back-of-the-Yards neighborhood. An unwed pregnant teen shows up; a teen from Paris, France appears, the result of a relationship during World War I; the first Mexican in the neighborhood is given a room and eventually inherits the place, his diary describes his young life running the streets in Tijuana, Mexico and how the rooming house served undocumented AIDS clients. The matriarch leaves a long-hidden diary that details her undisclosed life of brothels. Filled with love, life and family secrets, The Rooming House Diaries prove DNA does not always make a complete family.