She longs to make a difference.

He yearns to claim her heart.

After years of managing the Pendleton telephone office, Molly Thorsen answers the call for women to serve as telephone operators during World War I. Upon her arrival in France, she navigates the challenges of working near the front lines and battles the prejudices and skepticism of the men around her. Determined to prove her worth and skill, Molly faces adversity head-on while unexpectedly falling in love with a charming soldier.

Friday Fitzpatrick may not have been eager to engage in combat, but when he is drafted into the American Expeditionary Forces, he embraces the role of a soldier with unwavering determination. While fighting to survive the harrowing battlefield experiences, he clings to his sanity by dreaming about the captivating Hello Girl who has captured his heart. Though his opportunities to see her are limited, she serves as a beacon of hope in the midst of his darkest days.