Soo Ji's mother and Si Hyun's father make an official announcement about their engagement. Only then, do Soo Ji, Si Hyun, and Se Joo find out about the adults' relationship. Ki Young, Soo Ji's first love, makes snide remarks about the surprise announcement, and Se Joo stands up for her. Meanwhile, the three musketeers try to find a way to stop their parents from getting married.

Si Hyun, Soo Ji, and Se Joo discuss how Si Hyun will seduce Tae Hee. Si Hyun tries to make Tae Hee feel like it is fate by purposely running into her often. In addition, he also tries to win Tae Hee's sympathy. However, Tae Hee does not easily waver. Finally, he gets the chance to eat with her, and they seem to bond. At that moment, Tae Hee tells him she does not want to see his face anymore.