Cold Blooded Intern

Hae-ra tries looking for a job after being on a break for seven years, but no company wants to hire someone over 40. Hae-ra then runs into Ji-won, her old colleague, at a job interview for Market House. Although she doesn't pass the interview, Ji-won offers Hae-ra an internship, which Hae-ra accepts. Later, Ji-won asks Hae-ra to perform a special task, which puts her in a pickle.

Soo-pyo gets fired, and he doesn't know how to break the news to his family. Moon-jung gets in trouble as the designer who was supposed to submit his work goes AWOL. They find out he's at a marathon, so Moon-jung goes to look for him, and Hae-ra tags along. Hae-ra is torn about helping Moon-jung because of her secret task, but she decides to stick to her task in the end.

The entire office is confused after Moon-jung decides to leave for good instead of applying for maternity leave. It's been only two days, but Hae-ra wants to quit already. However, Soo-pyo is being let go from his office, and So-jin is counting on Hae-ra to replace her during her leave.

Hae-ra's mission to prevent So-jin from going on a childcare leave begins. As So-jin has stubbornly decided to take the leave, it will not be easy to persuade her. Meanwhile, Ji-won succeeds in getting rid of Gwang-su's incompetent minion. Now that she has no one who would get in the way, her ambition grows bigger.

After Ms. Lee quits, Hae-ra has a hard time trying to accomplish her mission. She has to make Ms. Geum quit as well, but she has a hard time convincing her to do so. Meanwhile, Hae-ra is given a project to work with Ms. Geum, and she comes up with a brilliant idea. However, she's warned by Ms. Park not to act fake and stop trying to push Ms. Geum into quitting work.

Hae-ra quits her job and starts doing a day-to-day job with her husband. However, after her video of trying to save a working mom from getting into a car accident goes viral, the company tries to bring her back. Meanwhile, Ji-won is trying to figure out her relationship with her father who passed away.