阵容强大！廉政公署、警队、律政司署合力调查，抗击各个贪黑势力。
Many criminals made the mistake of underestimating Lieutenant Columbo, a homicide investigator with a crumpled trench-coat and a beat-up car, who certainly acted as an incompetent bumbler. But he was so polite to every suspect, and he talked so much about his wife (who we never got to see on any episode, but who many believe later had her own show, starring Kate Mulgrew, later of Star Trek: Voyager fame) that he lulled even the shrewdest murderer into a false sense of security. And although the audience had witnessed the murder in the beginning of each episode, it was still a surprise to see what mistakes the killers had made during the seemingly perfect murder.
齐达冲（林文龙 饰）是一名电脑游戏程序员，他开发了一款游戏叫《幻梦之城》，游戏中的女主角名叫佐拉（朱茵 饰），玩家将操控佐拉在游戏NPC小老头的帮助下对抗追杀她的恶魔莎乐美。一个雷电交加的晚上，保存游戏的磁盘遭到了电击，佐拉和小老头竟意外从游戏中来到了现实世界。由于害怕莎乐美也从游戏中来到现实世界追杀自己，佐拉决定从达冲那里偷取游戏磁盘并将它藏好。于是佐拉化名叮当，找到了达冲，谎称自己被父母抛弃，无家可归。善良的达冲可怜叮当，于是收留了她在家里安顿。于是，一段美丽的都市展开了。
该剧分为《九阴真经》《东邪西毒》《南帝北丐》《五绝争锋》四个单元。《九阴真经》单元讲述了海商之女梅若华，少时遭奸人灭门，自此背负血海深仇。她因缘际会拜师桃花岛，从此改名梅超风，并与师兄陈玄风暗生情愫。梅超风一心想修习绝世武功复仇，误以为黄药师私藏《九阴真经》不愿传授，梅陈二人情根深种，定情盟誓，决定携手盗取经书，叛逃出岛。二人练成九阴白骨爪，黑风双煞，一战成名，却注定无法长相厮守。《东邪西毒》单元讲述了黄药师、欧阳锋，两个初涉江湖之怪人，一个逍遥近似仙，一个天真如孩童，亦敌亦友，亦正亦邪，他们用自己的规则打破江湖秩序，掀起一场云谲波诡的乱世纷争。《南帝北丐》单元讲述了逃婚出宫的大理世子段智兴与丐帮弟子洪七一见如故，乌蛮女子依火误将洪七当作和亲对象，一场乌龙成就命定缘分。洪七因缘际会习得神功，成为丐帮帮主，昔日父辈深仇却引兄弟反目，“一阳指”对上“降龙十八掌”，石破天惊 ！《五绝争锋》单元讲述了绝世武功秘籍《九阴真经》重现，引江湖厮杀，少女葭兰意外成为寻经“活地图”，遭各路人马穷追不舍，更结识黄药师、欧阳锋、段智兴与洪七等当世高手。众人约定华山论剑，天下第一者得《九阴真经》，最终全真教王重阳力压群雄。此时幕后黑手现身，一场捍卫武林正义的决战就此引发。
