Kung (Eric Tsang) and Kin’s (Jacky Cheung) rivalry goes way back to the seventies when they fought over the same girl, who eventually became Kung’s wife (Anita Yuen). Now they run competing phone stores right across from each other on Mongkok’s busiest street, and stretch their minds trying to outdo each other with crazy promotions. There’s absolutely no mixing with the enemy in these parts – until Kung and Kin’s kids fall for each other! Further chaos breaks out when the landlord triples the rent of all the shop owners to force them out for redevelopment.

Sit Ho Ching used to be an everyday white-collar worker who had no ambition and no plans for his future. Everything went smoothly until one day, when his boss set him up and his girlfriend cheated on him, he suddenly became a jobless single man, which made him rethink his past life of duties and routines. From then on, he decides to pursue wealth and fame by all means.