On the evening of April 1, 2003, Tong Ka-po, a current HKCEE candidate, learned the bad news that superstar Leslie Cheung committed suicide by jumping off a building. As a loyal fan, Po brought flowers to mourn his idol. Po met her crush, Au Ka-ming, and started a conversation with each other, but was interrupted by her friends Tong Yan, Li Jing'er and Lin Xiaomei. That night was a mixed bag for Po. Her most admired idol suddenly passed away, and the boy she had been secretly in love with for a long time said the first words to her. Po began to understand that the world and human feelings might be so unpredictable... Po, Yan, Er and Mei are good sisters, vowing to advance and retreat together no matter when and where, and never separate. After the HKCEE results were announced, Yan became the top scorer with 9A, Er's grades were average and she didn't want to repeat the year, but Mei, who had the worst grades, felt relieved and decided to return to society. Po successfully entered Form 6 at her original school and fell in love with Ming during the summer vacation. Bao stood out in the school beauty contest held by a magazine and was favored by many advertisers. While studying, she took advertisements in her spare time to help support her family, but her relationship with Ming gradually drifted away... Whenever the four sisters encountered good or bad things, they would gather at Min Kee Ice House to share and support each other. They never thought that one day they would turn against each other and go their separate ways, all for money and men. What makes people toss and turn is jealousy...