Lo Hin-chung is a contented veterinarian, while his mother is a domineering intellectual. He marries his childhood sweetheart, Fong Mong, who becomes an art director with the help of director Fong Kim-ting. Fong Mong's half-sister falls in love with Fong Kim-ting despite him being married, and their affair causes problems in her marriage with Hin-chung. Meanwhile, Hin-chung's brother tries to save his own failing marriage after cheating on his wife.
Cyber Security & Technology Crime Bureau Senior Inspector Szeto Chung is a mentor to and also a friend of Inspector Siu Mei-ting. They have unraveled all kinds of phone, online and tech scams. While Szeto Chung is investigating an online dating case, he runs into his ex-girlfriend Cheung Wai again.
Irresponsible Ning Rizhao relies on his brother Rilang. Neighbor Yang Xiaokui loves Rizhao. Rilang and friend Weng Yuxiu like colleague Gu Lingdi. Rilang sacrifices his feelings for Yuxiu. Lingdi sympathizes with Rilang. Rizhao reunites with former love Ruan Qiao. Ivory ban causes Rizhao to lose everything. Ruan Qiao suggests work abroad, straining their relationship. Rilang discovers he's not the biological son. Lingdi's father deceived Rizhao. Lingdi tries to accept Yuxiu. Rilang returns when father falls ill. Rizhao and Ruan Qiao reconcile. Lingdi refuses marriage proposal. Lingdi starts a new life abroad.
Crime profiler Fong Yat-chun receives a bizarre distress call, and the caller is astonishingly from the future. They predict brutal murders are going to take place! Yat-chun teams up with female detective Ying Ho-lam and forensics assistant Chong Ding-kan to prevent the deadly incidents from happening. But the perpetrator gets a head start and commits crime. Yat-chun eventually ascertains the caller’s true identity. He also finds out Ho-lam is going to get into trouble. And Yat-chun knows his destiny as well. However, Yat-chun loses contact with the caller from the future. The perpetrator is getting closer and closer to them! The death clock begins to count down. Successive homicides that are difficult to crack take place. Yat-chun has to race against time as he wants to change the future by tracking down the perpetrator as soon as possible.