Three Levels of Seven-Day Romance

The Shanghai National Pharmaceutical Factory has recently produced a new drug and sent representative Weng Xiong (played by Weng Shijie) to Hong Kong to find agents. The two major companies, Chen and Huang, are doing everything they can to win exclusive agency rights and are trying hard to please Weng Xiong. Among them, Cao Jun (played by Cao Charlie) from Chen's company takes advantage of Weng Xiong's weakness for beautiful women and takes him to visit brothels and bars throughout Hong Kong, allowing him to indulge in beauty and experience supreme pleasure. Cao Jun introduces Weng Xiong to three beauties at a nightclub: Ma Li (played by Chen Yingzhi), A Lian (played by Murakami Rina), and Meng Lu (played by Gu Jie). Weng Xiong hits it off with all three women. Since Weng's visa to stay in Hong Kong is for seven days, in order to shake off Huang's entanglement, Chen's company specially arranges for Cao Jun to accompany Weng Xiong and the beautiful women on a yacht to have fun at sea. The two men and three women enjoy themselves in the blue sea and under the blue sky, having an incredible time. However, the boat unexpectedly malfunctions; where will they go from here?