So Jin fails to meet Yeon Woo at the Han River, and she runs into Kang Hoon instead. Just when she thought she failed the experiment, she realizes that her telepathic message could've been interfered. So Jin and Yeon Woo go on a trip to Gapyeong to see a celestial show. Kang Hoon joins them in secret to stop Yeon Woo from hitting on So Jin.

So-jin comes to believe that the kind of food she and Yeon-woo consume will play a big part in their relationship, so she works hard to make Yeon-woo eat similar food. After learning her intention, Yeon-woo invites her to his place to cook a meal for her, but things don't go as expected. Meanwhile, Kang-hoon tries to find the cause of the fire that killed Ha Ga-hee, Yeon-woo's father's mistress.

It turns out So-jin has the BRCA gene, which makes her more likely to get cervical cancer. She ends up getting enteritis from the food she had at Yeon-woo's, and Yeon-woo decides to operate on So-jin himself. So-jin contacts her mom and sister to ask them to come on the day of her operation, but both of them refuse, leaving So-jin with no option but to be without a guardian.