A spellbinding reimagining of the lives of Ethel and Julius Rosenberg. In June 19, 1953, Ethel and Julius Rosenberg were executed for conspiring to commit espionage. The day Ethel was first arrested in 1950, she left her two young sons with a neighbour and never came home to them again. A few years earlier, in 1947, Millie Stein moves with her husband Ed and toddler son David into an apartment in New York's Lower East Side. She also befriends Ethel who is also a young mother. Millie and Ethel's lives as friends, wives, mothers and neighbours entwine - even as the FBI closes in.