On the night of the 18th, 'I Do I Do' revealed a scene of Hwang Ji An writing a letter of resignation.

On this day, Ji An went to see Madame Jang and apologized for not telling her about her pregnancy earlier.

Before this, Madame Jang selected Ji An as the future CEO but became furious after finding out about Ji An's pregnancy. Eventually, Madame Jang could not forgive Ji An even after she apologized and begged and ended up saying a lot of hurtful things.

On top of that, the news traveled and Yeom Na Ri found out that the father of the child is Park Tae Kang so Na Ri suggested Ji An to write the letter of resignation. This is to prevent from others knowing about the pregnancy so that it wouldn't be too much of a trouble for Ji An and Tae Kang.

Eventually, Ji An had to write the letter after a long contemplation and couldn't get rid of her disappointment. But while this was happening, she asked Na Ri not to tell Tae Kang any of this which showed her affection towards him.