After a big fight with her parents about marriage, Liu Li Ping moves out to live on her own and meets the sexually liberated Ji Er, who lives next door to her new apartment. Soon after, Liu is befriended online by another girl. Unbeknownst to her, the online girl is Ji Er's ex-fiancé who befriends her to spy on Ji Er. She later learns that Ji Er broke off the engagement because she couldn't tolerate her fiancé's mother controlling her life. Ji Er explains that although she and her fiancé are sexually compatible, his traditional values are incompatible with her modern values. As Liu traverses this new landscape of love and sex, she begins to re-exam her own values.
