Just two weeks after marrying her childhood sweetheart, Ellen Mackey received a mysterious letter from her husband alluding to a secret Army mission. When he doesn't return, Ellen spends the next decade holding out hope for his safe return and taking care of her young son. At the same time, Logan Mackay is trying to recover from injuries sustained from the mission, including memory loss, as he looks to rebuild his life under an adoptive name. Ellen's passion for finding Logan is the embodiment of love and faithfulness. Over her lengthy quest to find her soulmate, she clings to what Logan wrote in the letter he sent her years before. "Wherever you go, and wherever you may be, I will only be a whisper away."