One night, a truck transporting cultural relics had a car accident, and the Tang Sancai "Salu Zi", one of the six horses of Zhaoling, was stolen, which attracted great attention at home and abroad. After that, Xia Mei (Kelly Chen), a female host of a TV station who loves rock climbing, was sent to London, England to participate in an auction house event, taking the opportunity to investigate the whereabouts of "Salu Zi". Unexpectedly, her invisible headphone signal conflicted with the headphone signal of police officer Zhang Hao (Ekin Cheng) at the venue, so that the secret visit ended in failure. After that, Zhang Hao took the initiative to visit and informed the mysterious and cunning international thief Jiuweihu (Tony Leung) that it is likely to lock "Salu Zi" as the next theft target. From the secret video, they really saw a figure suspected of Jiuweihu appear. In order to thoroughly find out the whereabouts of "Salu Zi", Xia Mei asked to stay in London, and at this time Jiuweihu also took the initiative to approach Xia Mei. The romantic and tense journey of cultural relics tracing began...