<Korean TV Series REVIEW> ”The Prince Has Disappeared” Episode 15 Synopsis and Behind the Scenes... Is Su-ho jealous of To-seon and Hong Ye-ji? = Behind the Scenes and Synopsis

*This contains spoilers and synopsis. *There is a making-of video on the Wowkorea page. Video from 2:28 to 5:32.
This time, the scene begins with the prince appearing in front of Myung Yoon and the others. Lee Gon picks up a book that was lying there and starts reading it. However, the angle of the book is too low, so it's a NG.
The director then gave specific instructions on how to move the camera, saying, "I think this angle would be good. But it's too far away, so Myung-Yoon can't be seen. So move backwards like this to show him."
Next, they gather together after hearing that the king has woken up. Prince Toseong and Lee Gon start arguing.
Jung Jin-oh asks, "Shall I raise my hand?", drawing laughter. After the rehearsal, it's time to start filming. During the break, Kim Min-Gyu looks up to Hong Ye-Ji with a sense of humor. After that,
The two of them chatted happily. Next, Lee Gon came to Myung Yoon to check on the king's condition. Here, Lee Gon asked Myung Yoon directly, "Did you say that you were going to marry To Song?"
Are you jealous?' To which she replied, 'It's not jealousy... I was just wondering why you suddenly said something like that.' While she was still in the middle of her sentence, Choi Sang-rok and others approached her and the two of them hid.
The director instructs Kim Zu Hun to make Ng Rok take the king's pulse and make a suspicious face. ●Reactions of Korean netizens● "I'm curious about the love triangle" "Will she marry Do Sung?"
"What will happen to Myung Yoon's future?" "I hope she has a happy ending." "Kim Min-Gyu's acting is great." ●Synopsis●
Episode 15 of "The Prince Has Disappeared" (viewer rating: 3.5%) features Gon (SUHO of "EXO") trying to find an antidote to save the king.
The scene was depicted of Gon and his younger brother, Prince Toseong (Kim Min-Gyu), glaring at each other when his maternal grandfather, Daegen Moon-hyeon (Nam Kyung-eup),
I was shocked by Prince Tosung's words that he had tried to hurt Myung Yun. Prince Tosung then said, "In the end, you can't protect anyone. Not your father, not your mother, not Myung Yun."
Myeong-yun came out and asked Prince Toseong to give him time to treat the King (Jeong Jin-oh), and Prince Toseong strongly opposed, but Myeong-yun strongly agreed.
He takes a step back due to Gon's attitude and his stubbornness in protecting Myung Yoon, and leaves after giving him a night's time. Later, Gon sees something related to the antidote in the room of Queen Dowager Min.
He heard from Myeong-yoon that it was in the book, so he went to visit Queen Dowager Min and invited her outside, saying that he would open Prince Gwangchang's Cheondojae. Meanwhile, Myeong-yoon sneaked into the Queen Dowager's palace.
However, the book only listed the ingredients of the antidote, not the ratio of the ingredients. Gon and Myung-yoon rack their brains to find the exact ingredients for the antidote.
He started to mix the mixture, but was troubled when it did not go well.