Liu Zhuo Lun (Adrian Pang) is a successful 40-something investment consultant and is seen as an eligible bachelor. However, he is a stubborn man, and has an obsessive compulsive disorder for cleanliness, thus is extremely difficult to get along with. When a new neighbour Lin Ai Qiong (Yvonne Lim), a divorcee with a son moves in, conflict ensues between them.

Unforeseen circumstances force Zhuo Lun to care for his sister’s 9 month-old infant, Eva, but he fumbles and is at a lost of what to do. Reluctantly, Ai Qiong comes to his rescue.  

Zhuo Lun becomes a changed man after spending time taking care of Eva. And Ai Qiong develops a liking for him but has to hide it because her son dislikes him.

Everything changes with the return of Eva’s mother and Zhuo Lun, unwilling to leave the baby, becomes her godfather instead. With Eva in tow, he sets on a quest to confess his love for Ai Qiong. Will she accept him? Will her son get in the way?

性情怪僻的钻石王老五刘卓伦（彭耀顺）不但屡次恋爱碰壁，还被邻居视为自私风流。妹妹为解救在中东卷入走私案的丈夫，硬将九个月大女儿Eva托他照顾。卓伦手忙脚乱；需穿上妹妹衣服及戴假乳房才能将女婴乖乖哄住，颜面尽失！但当奶爸后，卓伦人缘形象均改善，更对失婚邻居林爱琼（林湘萍）日久生情。卓伦原想弃养Eva，但最终改变初衷。当妹妹再出现时，他和女婴已难割舍。他更抱着宝宝去找爱琼，排除万难，对她倾吐真情！