Jimmy Tong is an expert blackmailer and thief who specialises in white-collar crimes. With his side-kick, Jimmy steals a personal diary belonging to a Yakuza leader Ken Sato intending to use its details as a platform for blackmailing and to extort money. Sato agreed to the uneasy deal and made preparations to pay Jimmy his exorbitant demands only for Sato's girlfriend Jenny to betray him and make off with the money to Okinawa.
After finishing the open examination for Form 5 students and applying for an adult identity card, Yoyo, eighteen, departs for London to meet a guy introduced by her well-meaning parents in Britain. The guy, named Cheung, is in his thirties. Yoyo's and Cheung's grandfathers were wartime buddies. They swore to have their unborn babies get married when they grew up. However, the babies turned out to be both women. The two women are now mothers. They come across each other again and want to make their fathers' wish come true, so they arrange for Yoyo and Cheung to meet in London. Yoyo and Cheung promise to get marry in order to please their mothers. But on the wedding day, they also sign a divorce agreement which is effective one year after their marriage.
Tung is a street cop in Hong Kong who's friends with a Triad named Fai. Fai hires a hit man to murder a business rival; the hit goes wrong and Fai, implicated in the incident, goes on the run.
