In 1944 Tennessee, life for Lucy Mercer is mapped out to perfection. When the war ends and her brothers are discharged from military service, she will marry her high-school sweetheart, close friend, and neighbor, Greg Carmichael, who lives on the adjacent farm. But on the night that cements their engagement, Greg stuns everyone when he announces that for a few months, he will go to work within a “secret city” in the new city of Oak Ridge, TN. Greg leaves to make money for Lucy’s and his future, but within months, he disappears without a trace. After months of fighting military and police bureaucracy, Lucy pretends to be just another worker joining the project in Oak Ridge, while she secretly lies her way to finding out the truth about Greg. An unexpected alliance with the project’s photographer, the charming and handsome Finch Kildee, leads to an undeniable attraction and feelings that neither can ignore. But as the truth about Greg and the “bomb” they’ve been making in Oak Ridge comes out, can even a consuming and powerful love surrounded by lies, secrets, and betrayals survive the extraordinary circumstances that spawned it?