This novel depicts the dreams of youth and the mission of the nation, telling a story of a military romance that spans mountains and seas, filled with twists and turns. The young Xia Mingyue met naval academy student Li Hang in Lucheng, and after a brief infatuation, the two were forced to separate from each other. Their youthful crush and the pains of growing up intertwined as Xia Mingyue traveled to Taiwan for an exchange program. An earthquake gradually brought their hearts closer, and they made a vow to "meet at the peak", both striving to fulfill their dreams. Years passed, and Xia Mingyue had transformed from a literary girl to a rising writer, while Li Hang chose to join the navy after graduation and remained committed to his duty during deep-sea patrols. However, fate took an unexpected turn when a car accident left them out of touch. Will the letter that crossed the waves ever receive a response again?