A Quan (Gu Juji), A Cai (Su Zhiwei), and A Paul (Lei Songde) are sworn companions and roommates who are as affectionate as brothers. They have different personalities and have different experiences in love. Cai, who has a dull appearance, and his girlfriend Minl (Lizi) had a good relationship. But after being criticized by friends and Minl's mother, Cai became angry. So he turned his heart upside down and changed himself into an avant-garde. Minl doesn't accept that there is a problem between Minl and Cai. The relationship ended after they met for 100 days. Paul is a master of love. On a rainy night, he met a 100% girl named Rongrong (Zhang Shenyue Nicola), but he was so unpredictable that Paul was at a loss. As a result, this 10 day relationship ended after Rongrong returned to Canada. Ah Quan was introverted and used to be lonely for many years. With Paul's introduction, he met Amy (Zhang Huanwei). He was full of feelings. He thought that this relationship would be a success. Who knows that Amy only regarded him as an elder brother. In fact, he was in love with Paul. He was helpless and sad. He met Chen Tai (Zhou Haimei), who was also lost on Tianya. Under the guidance of the beautiful Chen Tai, They had a one night stand, and the relationship ended on that day.
