刚刚走出象牙塔的年轻插画师向言向往美满的婚姻生活，意外结识了一直奉行独身主义、事业有成的口腔医生林衡宇。两人机缘巧合之下成为了合租室友，并在长期的相处过程中，林衡宇心中的坚冰被向言的温暖治愈融化，他逐渐发觉自己对向言产生爱意，向言也慢慢发现自己渴望婚姻的本质是渴望与爱人建立亲密无比、相互信任的关系，两人并肩度过了爱情与事业上的大小危机，也渐渐理解爱与婚姻的真谛，携手步入婚姻殿堂。

劇集用“六度分割”理論串聯起三個不同的愛情故事：向言（何藍逗 飾）和林衡宇（曹煜辰 飾）是“命中註定”，林衡宇是獨身主義，卻因爲向言願意走進婚禮的殿堂；談詩詩（梁頌晴 飾）和是然（吳海 飾）是“非你不可”，他們相差六歲，是然努力的目標就是有朝一日和談詩詩並肩而立；路念（靳陽陽 飾）和蔣旗（王浩歌 飾）是“一見鍾情”，他們都善於僞裝，蔣旗小心翼翼地靠近只爲給路念絕對的安全感。

劇集用“六度分割”理論串聯起三個不同的愛情故事：向言（何藍逗 飾）和林衡宇（曹煜辰 飾）是“命中註定”，林衡宇是獨身主義，卻因爲向言願意走進婚禮的殿堂；談詩詩（梁頌晴 飾）和是然（吳海 飾）是“非你不可”，他們相差六歲，是然努力的目標就是有朝一日和談詩詩並肩而立；路念（靳陽陽 飾）和蔣旗（王浩歌 飾）是“一見鍾情”，他們都善於僞裝，蔣旗小心翼翼地靠近只爲給路念絕對的安全感。

The young illustrator Xiang Yan, who had just stepped out of the ivory tower and longed for a happy married life, unexpectedly met Lin Hengyu, a successful dentist who had always advocated for celibacy. By coincidence, the two became roommates and, over a long period of cohabitation, Lin Hengyu's icy heart was melted by Xiang Yan's warmth. He gradually realized his love for Xiang Yan, and Xiang Yan also gradually discovered that her desire for marriage was essentially a desire to establish an intimate, trusting relationship with a partner. The two overcame the ups and downs of love and career. Gradually understanding the true essence of love, they finally walked hand in hand into marriage.

O jovem ilustrador Xiang Yan, que acabara de sair da torre de marfim e ansiava por uma vida de casado feliz, inesperadamente conheceu Lin Heng Yu, um dentista de sucesso que sempre defendeu o celibato. Por coincidência, os dois se tornaram companheiros de quarto.