From the beginning of the series, main character Kim is adamant that she is sexually obsessed with her best friend, Sugar. Her strong feelings for Sugar motivate her to do anything for her friend, even when Sugar takes advantage of Kim's eagerness.
Kim enters Sugar's world of casual sex, cigarettes, the over-consumption of alcohol and illegal drugs.
Sugar is accustomed to using her good looks in order to get what she wants. Sexy, sassy and street-wise, she becomes a bad influence on Kim. She encourages Kim to drink alcohol and eventually gets Kim mixed up in all kinds of situations.