Do you want to dance? With this one question, Erica Wallace and Todd "Linc" Lincoln will have their lives permanently altered. In her trio of friends, Erica is the responsible one. Painfully shy, and the son of a Baptist minister, Linc is an unlikely Marine. The moment their eyes meet, it's love at first sight. With Linc's imminent and lengthy deployment to Iraq threatening to end their blossoming romance, Linc makes Erica what seems like an impossible promise: if she'll marry him before he leaves, he'll come home alive. One week later, Linc is gone. During his absence, they trade a series of deeply personal letters as a way to bridge the distance between them. Along the way, they discover it's these letters that have laid the foundation of their relationship. When tragedy strikes, they'll find out if this is enough to save their marriage and their lives.