麦提爽（黄子华 饰）自小有商业头脑，发奋读书凭努力于美国史丹福完成MBA课程，与何问天成为合伙人，亦师亦友合作无间，成为美国商界叱咤风云的狙击手。但后因分歧导致问天醉酒驾驶跌入海中，事后，提爽黯然退出商界。但知问天的妻子佘慕莲（李绮红 饰）因而负债累累后决定回港照顾她。巧遇商界二世祖唐吉（许绍雄 饰），逐为他打工赚取报酬代慕莲还债。但他爱耍个性拒做上班族，导致收入不稳，日夜遭财务公司收帐员林淼淼（佘诗曼 饰）死缠烂打，两人尔虞我诈，你追我跑，遂成一对欢喜冤家。
直至提爽遇上同母异父的弟弟安祖连（谢天华 饰），勾起当年被母亲抛夫弃子的惨痛回忆，突然性情大变，逐步向安家上下开始爆发，一向多计的淼淼也无所适从，看不清提爽的真实想法......

During the Northern Song Dynasty, foreign tribes coveted the territory of the Great Song, creating a confrontational situation between the Han and non-Han ethnic groups. Qiao Feng (portrayed by Felix Wong), the leader of the Beggars' Sect, was falsely accused of being a descendant of the Khitans as revenge for rejecting the love of Kang Min (portrayed by Yim Wai-ming), the wife of the deputy leader. He was despised by martial artists in the Central Plains. Determined to clear his name, Qiao Feng searched everywhere for clues about his origin. During this period, he met Duan Yu (portrayed by Benny Chan), the prince of Dali, and the monk Xu Zhu (portrayed by Fan Siu-wong), and they became sworn brothers.

杨康的儿子杨过（古天乐 饰）自小被郭靖收养，郭靖希望他学好，于是送到了桃花岛跟黄药诗学习。杨过在桃花岛上整日被郭芙和大、小武欺负，一气之下独自出走了。杨过被古墓派的小龙女（李若彤 饰）收留，认她作姑姑，生活在活死人墓里跟小龙女学习武功，日久天长，两人渐渐互生情愫，决定今生今世结成夫妻，永远生活在古墓。可惜机缘巧合下，他们最终要走出活死人墓，去经历一番江湖恩怨，两人最后能否有情人终成眷属？