It turns out that Jae-yeol and Hae-soo didn't take that trip, since she asks him if he's angry that she pulled out. He's completely fine with it as he tells her they can just go another time, causing Hae-soo to smile as she says, "You really are my type."
So in lieu of a vacation, Jae-yeol takes her to see some flowers... at his mom's house. Visiting the parents already? He's fast.
Mama Ok-ja has sympathy for Hae-soo being caught unaware, even though she's surprised at just how much Hae-soo knows about her son. Then again, Hae-soo's the first girl Jae-yeol's ever brought home.
While Hae-soo goes for a walk around the neighborhood, Mama Ok-ja confesses to Jae-yeol that she's been thinking about the past a lot lately. One incident in particular stands out as we see the flashback: Mama Ok-ja had been enraged to find Jae-bum eating "his brother's" food from her kitchen after being released from a juvenile detention center.
Even though Jae-bum remembered it was her birthday and noticed her new black eye, Mama Ok-ja treated him like an unwelcome pest. In the present, Jae-yeol tsks at his mother for being too harsh-she had quite the temper back then.
She doesn't deny it, as the flashback resumes to where her shouting match with Jae-bum escalated sharply when she'd told Jae-bum to just go die, to which Jae-bum fired back that he wouldn't give them the satisfaction of his death.
Then she'd noticed a container of oil, and in his anger, Jae-bum claimed he'd brought it to burn the house down. In the present, Mama Ok-ja admits that she didn't remember until after how she'd told Jae-bum she couldn't make him food without it a few weeks prior. The oil was his birthday gift to her.
She asks Jae-yeol if he knows that Jae-bum isn't as bad as everyone makes him out to be, which he does. Mama Ok-ja then sighs that Jae-bum turned out this way because she didn't testify for him in court, even though Jae-yeol cryptically counters that she couldn't have testified for him anyway, because she saw what really happened.
Jae-yeol tells his mom to keep her chin up, so that way they can reunite as one happy family when Jae-bum finally comes home. To him, Jae-bum's jail sentence will mark the last of their family's misfortune. It'll be blue skies for the three of them soon.
Mama Ok-ja approves of Hae-soo and tells her son to stick with her for the long haul, and he chuckles a bit as he wonders if he would eventually get sick of Hae-soo, but it's clear he isn't really looking to argue. If anything, it seems like he's considering the idea of a future with her pretty favorably.
During the car ride home, Hae-soo initially brushes off Jae-yeol's suggestion that they go on a trip together as him just fooling around. But when he reminds her that she always keeps her passport on her and is therefore always ready to travel, she starts to wonder if he's really serious.
He is, and suggests they go to Okinawa, specifically to the place she has a picture of in her room. "Let's just go," he says, and she laughs at the ridiculousness of it all until she makes a sudden spontaneous decision and agrees. But he better hurry before she changes her mind.
Instead of seeing his next patient, Sunbae Jo is instead met with Doctor Lee, who wears a stone-faced expression as she explains that she's only there to seek his counsel for her brother-in-law, who may be suffering from a delusional form of jealousy when it comes to her sister.
Jae-yeol is euphoric as he drags Hae-soo to the airport, even as she keeps trying to dissuade him by mentioning the various impracticalities of their sudden departure, all of which he refutes easily. I love how he's as excited as a kid on Christmas.
In trying to follow him, Hae-soo trips and breaks her arm, forcing her and Jae-yeol to sidetrack to the hospital for a cast. (This is likely the drama's way of covering for the real-life accident Gong Hyo-jin was in.)
