Liu Dingjian (played by Feng Cuifan) fired Liu Bei (played by Andy Lau) from the car dealership to save costs. Unexpectedly, Liu Dingjian's former rival, Kou Shuizhan (played by James Wong), opened another car dealership next to Liu's car dealership with her three daughters, Azhen (played by Yau Shuzhen), Amin (played by Vivian Chow), Ade (played by Weng Huide) and her sister-in-law Wenwen (played by Sharla Cheung). Unwilling to be robbed of his business, Liu Dingjian immediately hired four unemployed cousins (played by Shing Kui-an, Wong Jing, Cheng Tanrui, and Chen Shanhe) to fight against Kou Shuizhan's car dealership. The four cousins are quite lustful. Although their wages are deducted by Liu Dingjian, they live a happy life of creating "seducing women" inventions every day and launching offensives against the four women next door under Liu Bei's guidance. Soon, colleagues with underworld backgrounds and big bosses with ulterior motives attack Liu Dingjian and Kou Shuizhan, causing the two groups of people who have been confronting each other all day to stand on the same front...