本剧以家族情仇与时代情怀为主轴，剧情叙述一场突如其来的意外，让「五秀园」的传奇厨神总舖师万里师(刘汉强 饰)蒙冤身亡，爱女(王乐妍 饰)坠海失踪，昔日并肩打拼的四位弟子: 大师兄(窦智孔 饰)二师姐(星卉 饰)三师兄(谢承均 饰)与小师弟(王振复 饰)也因此分崩离析，曾经名噪一时的五秀园成了无法回首的过往。然而，25年后，尘封的秘密即将重现，恩怨情仇再度捲土重来，一段段亲情与背叛交织的故事，将牵动所有人的命运…
许佳佳继承父志，加入社会安全支队，和队员们一起维护社会治安。
捉襟见肘的安东在一家高档宠物店找了份工作，从医治乡村农场动物的医生变成了兜售高级宠物狗零食的店员。
王振扬即将上任成为香港警务处长，而他的上任势必会给香港龙蛇混杂的黑道以重大打击。侯家是香港最大的黑帮，其话事人侯文华（魏骏杰 饰）扬言会在一个月之内让王振扬知道他们的厉害，重振黑道雄风，警方派出情报科高级督察黄家辉（郑嘉颖 饰），命其不顾一切保护王振扬的安全。 侯文华联手泰国毒枭企图垄断东南亚毒品市场，他们的阴谋被女警丽塔（施莉达 Sririta Jensen 饰）识破，经过调查，这一切犯罪行动和富商郑坤有着撇不清的关系。西九龙重案组队长冯志伟（方中信 饰）邂逅了名为彭惠（蒙嘉慧 饰）的女子，后者实为侯文华的心爱之人。在侯文华的精心设计之下，冯志伟蒙上了杀警的不白之冤，与此同时，冯志伟亦发现在警局之中存在着黑帮卧底。
As Leo's replacement Thomas Chamberlain arrives Nikki investigates the murders of Rachel Freedman, shot in the head, and her little autistic son Nathan, who was poisoned. Nikki rejects policewoman Anne Burchett's theory that Rachel killed them both but is perturbed when an impostor, claiming to be Rachel's sister, visits the morgue. At the same time the disfigured corpse of Eva Liron is discovered, killed with the same poison as Nathan. She had been the nanny to French hot shot footballer Isaac Dreyfus and was planning to blackmail him over a sex tape of them both. Jewish Isaac is a controversial figure due to his anti-Muslim sentiments but he denies ant part in the murders. Then another victim, Isaac's agent Mousa, is discovered dead.
