It's 1933, and eight young women are friends and members of the upper-class group at a private girl's school, about to graduate and start their own lives.
Lee Kei-hau is happily married with a son. His wife Wong Tai-chu, who has been complaining of discomfort lately, goes to see a doctor where her friend Wong Mau works as an assistant.
An airplane crashes in Spain. The Russian as well as the Chinese government take care of the events because on board there was a "black box" containing precious and dangerous devices for the whole world.