Rosemary's Baby is the modern-day adaptation of the 1967 best-selling suspense novel by Ira Levin. The story centers on a young married couple (Saldana and Adams) who move into a Paris apartment that has a haunted past. After getting pregnant, the wife becomes increasingly suspicious that both her husband and their neighbors will have ulterior motives when her child is born.
李世民(莫少聪 饰)和吴国生(黄日华 饰)是多年的好友,后者因自己而丧命。对好友充满了愧疚的李世民收养了好友的儿子星仔(郑家麟 饰)。星仔个性叛逆,常常惹出许多的麻烦,让李世民的妻子郭可仪(何婉盈 饰)忍无可忍,最终选择离丈夫而去,只有李世民不离不弃的将星仔视如己出。 最终,星仔明白了李世民的苦心,两人之间逐渐产生了真挚的父子之情,在这个节骨眼上,星仔的亲生母亲叶芳(梁小冰 饰)突然出现在了李世民的生活里,要和李世民争夺星仔的抚养权。在此过程中,李世民和叶芳之间渐渐产生感情,无奈叶芳在国外已经结婚成家,两人的这段恋情注定不会有结果。