In "Bluebird House" Um Hyun Kyung realized that something was out of the ordinary between Chae Soo Bin and Lee Sang Yeop.
On the 20th episode of KBS 2TV weekend drama "Bluebird House" (script Park Pil Joo, director Ji Byung Hyun) broadcast on Apr. 26th, Han Eun Soo (played by Chae Soo Bin) and Hyun Do (played by Lee Sang Yeop) were talking at work and were caught by Mi Jin (played by Um Hyun Kyung). The two people were talking about the team director that had humiliated Eun Soo at work. While talking in the emergency exit, they were almost caught by Ji Wan and Hyun Do hid behind the room.
Nonetheless, seeing this, Mi Jin recognized that the two were dating. Afterwards, Mi Jin knew about Hyun Do's secret and made him run simple errands. Such included going to the copier and even getting coffee as well as changing the water tank. With that, she was happy that for once, Hyun Do was listening to her like a young employee should follow an employer.
Meanwhile, "Bluebird House" is about the younger generation that showcases the struggles of their unemployment and conflicts with reality. It showcases how families can grow with love despite the lack of family ties.