Two stories running as opposites in parallel. First up is Victor (Eric Tsang) AKA Viagra. Like the other bored and impotent would-be lechers in his town, his night-time thrills come from eavesdropping on the groans of slinky new arrival Bobo (Angie Cheung filmed to full effect by director Aman Cheung) and her lover. A fun death scene pops by and Bobo becomes a widow receiving smutful phone calls from Victor. Quickly Bobo becomes Victor's Viagra - a kinky call to Bobo prepares him for his horrid wife.
Working it the other way, the SAR's leading male porn star Chiu (Anthony Wong) gets performance anxiety when contracted to star alongside tattooed Japanese AV porn star Susie Bomb. Worried that his famed equipment won't rise to the occasion on the international XXX circuit, he seeks out the infamous blue pills. The problem, you see, is that Chiu isn't particularly turned on by his co-stars - he's only truly fired-up by his wife Tenie (Yuen King-tan at her warmest). Cutting this short to avoid spoilers, may I add that there's a lovely side story here about Chiu's Dad, his blind Mum (Helena Law), a bottle of Viagra and PR Girl Mandy (Pinky Cheung).