In order to fulfill her great-grandfather's last wish before his death, she promised to live a good life at the home of her great-grandfather's comrades. In order to repay the debt of gratitude owed by his father, he reluctantly promised his father to take good care of her, let her, and pamper her. But over time, the relationship between the two gradually warmed up. Especially after experiencing life and death, they recognized their own hearts and gradually became lovers, husband and wife, and even lifelong husband and wife.