Childhood sweethearts for twenty years, Song Nanqing and Mu Yuanchen's love was about to culminate in marriage. On the eve of their wedding, however, Song Nanqing witnessed Mu Yuanchen secretly marrying his lover Wen Yan in a church—the very wedding gown Wen Yan wore was designed by Song Nanqing herself. Five years ago, she had suffered severe injuries saving Mu Yuanchen, leaving her infertile, in exchange for his vow of "only you in this lifetime." The final blow came when Wen Yan was already pregnant with Mu Yuanchen's child. Heartbroken, Song Nanqing replaced herself with Wen Yan as the bride. Oblivious to the switch, Mu Yuanchen, upon realizing the bride wasn't Song Nanqing, frantically searched for her, begging for forgiveness, but she left without hesitation. Mu Yuanchen then chased after Song Nanqing to Nan City, claiming he had truly repented and pleading for her to take him back...
