After kissing Yifei by mistake, Zeng Xiaoxian was terrified, and Tozhanbo forwarded a letter of apology to Yifei. After that, he was deeply pressured to leave a note and mysteriously disappeared. A month later, Zhan Bo looked for clues about Xiaoxian from his bank statement. What is surprising is that he found out that his whereabouts were actually in Vietnam, which aroused everyone's imagination. Three months later, Xiaoxian came back and appeared in the bar without knowing it, which made the entire love apartment very excited. Xiaoxian takes everyone to his new residence to reunite, telling the legendary experience of these three months. After learning that Yi Fei had a wealthy boyfriend, a deep jealousy surged in her chest.
错吻一菲后，曾小贤惊恐万分，托展博转给一菲一封道歉信，之后深感压力最后留下字条便神秘失踪。一个月后，展博从他的银行账单中找寻关于小贤的蛛丝马迹，让人诧异的是，查到他的行踪居然在越南，引得大家浮想联翩。三个月后，小贤回来了，并神不知鬼不觉地出现在酒吧中，这让整个爱情公寓的人都激动万分。小贤带大家到他的新住处团聚，讲述这三个月来的传奇经历。在得知一菲有了一个相当有钱男友后，胸中便涌起浓浓醋意。
