Athletic, kind and magnetic, freshman class rep Sun Ya-fang is adored by everyone, including shy classmate Yang Chia-chung and brash upperclassman Chen Yu-jen. Chen clumsily courts Sun, but Sun doesn't like him at all. Sun is unhappy with Yang for not participating in class activities, but changes her mind after learning that he must work after school to support himself and his younger sister because they are orphaned. She begins to like him especially after a classfield trip. Yang decides to write her a love letter and make his feelings known. Unfortunately, the letter gets delivered to the wrong girl: now Sung Ming-yuan is ecstatic, much to the disappointment of Sun. Yang doesn't know how to clear up the misunderstanding without hurting Sung, so he reluctantly goes out with her. Meanwhile, Sun spends her days hanging out with George Kao, her American cousin vacationing in Taiwan. Yang feels jealous and upset, but thankfully for him Kao and Sung meet and fall in love. Yang can no longer hide his feelings. Playing his guitar, he sings a love ballad in front of Sun's house until the neighbors call the police. Sun feels embarrassed but finally gets together with him after a harmless bicker. The film ends with them happily in love.
Cast
Pon Sheh-fuen as Sun Ya-fang, the unselfish and charismatic leader of the freshman class. Though very pretty, she is tomboyish and teaches taekwondo to young kids in her free time.
Chang Yng-jen as Sung Ming-yuan, the only other girl in the freshman class. She enjoys music and craves for love.
Alan Tam as Yang Chia-chung, a quiet freshman who eventually falls in love with Sun Ya-fang. Having lost his parents, he supports the education of himself and his younger sister by working as a taxi driver after school. He also plays the guitar.
Lin Tzay-peir as Chen Yu-jen, an upperclassman in the Student Association. He drives a jeep and tries to court Sun Ya-fang unabashedly.
Li Daw-horng as George Kao, Sun Ya-fang's crazy American-born cousin who visits Taiwan during a break. He claims to have dated more than 80 girls in America. He finally finds love with Sung Ming-yuan and decides to marry her.
Tsuei Shoou-pyng as Sun Ming-liang, Ya-fang's eldest brother, a nerd who speaks just everything in classical Chinese. He has sent 84 love letters to a nerdy girl to no avail.
Teng Jue-jen as Sun Ming-tsung, Ya-fang's second brother, a player who tries to date 10 girls at once with no success.
Kao Ming as Mr. Sun, Ya-fang's father
Chang Ping-yu as Mrs. Sun
Wei Su a Mr. Sung, Ming-yuan's overprotective father.
Li Kuo-hsiu as Tsao Shan-hsien, a nerd in the freshman class.
Tao Shu as Tsao Shan-hsien's mother.
Theme songs
sang the theme songs of the film, both composed by Chen Hsin-yi with lyrics by Chuang Nu:
"Nanwang de Yanjing" — included in Teng's 1981 album Boat People
"Qingfeng" — included in Teng's 1981 album If I Were for Real
