*This content was translated by AI.

Byun Woo-seok rescued IU, who was trapped inside a speeding car.
The fourth episode of MBC's Friday-Saturday drama '21st Century Grand Duchess' (script by Yoo Ji-won, directed by Park Jun-hwa, Bae Hee-young; planned by Kang Dae-seon; produced by MBC, Kakao Entertainment), which aired on Saturday the 18th, recorded viewership ratings of 11.3% in the Seoul Capital Area, 11.1% nationwide, and 5.3% among viewers aged 20–54, setting a new personal record and securing first place in the same time slot across all three metrics. Notably, the 2054 viewership rating, a key indicator of channel competitiveness reflecting changes in media consumption environments, achieved the top spot among all Saturday programs. Additionally, the drama reached a peak viewership of 13.8% in Bundang, demonstrating an unstoppable upward trend (based on Nielsen Korea data).
In that day's broadcast, Prince Lee An (played by Byun Woo-seok) appeared before Seong Hee-ju (played by IU), who was in danger due to a car with malfunctioning brakes, sending viewers' hearts racing.
The previous night, Seong Hee-ju and Prince Lee An, who had met across a wall, continued acting as a couple after sensing the gaze of paparazzi. As planned by the two, the moment photos of the couple's picturesque kiss were released, the royal family convened an emergency meeting. Prince Lee An declared he would acknowledge their relationship by citing the possibility of marriage, and Prime Minister Min Jeong-woo (played by Noh Sang-hyun) also supported Prince Lee An's stance, stating that further disturbances must be prevented.

Ultimately, Seong Hee-ju and Prince Lee An officially became a In Jeong-han (왕) couple. However, Yoon I-rang (played by Gong Seung-yeon), who was prepared for such an event, and the external power faction sought ways to separate Seong Hee-ju and Prince Lee An before public interest grew further, creating a sense of unease.
At the same time, Seong Hee-ju, before the opposing faction emerged, visited a baseball stadium with Prince Lee An to attract public attention, stating that a strong move was needed to confirm their marriage. Although they failed to wear matching couple uniforms, Seong Hee-ju's plan was a great success as the two were captured on the stadium's big event KISS time scoreboard.
While building various memories with Seong Hee-ju, Prince Lee An's feelings for her gradually grew stronger. Above all, after the kiss, there were moments when he became conscious of every action Seong Hee-ju took. Furthermore, despite his anger at the continued pressure from Yoon I-rang, he regained his composure upon hearing Seong Hee-ju's words "I'm your own person", hinting at the changes occurring in Prince Lee An's heart.
Seong Hee-ju also began preparing to become a Grand Duchess. She received rigorous training from Royal Court Lady Choi Jin-sook (played by Park Jun-myeon) at Anhwadang and gradually learned royal etiquette. She also spent time with King Lee Yoon (played by Kim Eun-ho), who came to meet Prince Lee An, engaging in various games and creating unique memories.
And at the request of the young King Lee Yoon, Seong Hee-ju went on a drive together, only to suddenly discover that the car's brakes had failed. Both Seong Hee-ju and Min Jeong-woo, who was following her car, tried to stop it, but the vehicle continued to speed forward.
And at that moment, another car blocked the way, and the speeding car carrying Seong Hee-ju came to a halt. Seeing Prince Lee An's face as he stepped out of the car through the blurred vision, Seong Hee-ju let out a sigh of relief. It remains to be seen what the future holds for Seong Hee-ju, who was put in a perilous situation by being carried in a Lee E (왕) and forced into a dangerous drive.
<© STARNEWS. All rights reserved. No reproduction or redistribution allowed.>
*This content was translated by AI.

![Wife: "149kg husband's eating habits are terrifying" Shocking visuals from [Hell's Marriage]](https://image.starnewskorea.com/cdn-cgi/image/f=auto,w=271,h=188,fit=cover,g=face/21/2026/04/2026041908493495201_1.jpg)
!['Mole Girl' Kang Yu-kyung "I Wanted to Play the Fox" Honest Confession... Straight Ahead Toward Park Woo-yeol [Heart Signal 5]](https://image.starnewskorea.com/cdn-cgi/image/f=auto,w=271,h=188,fit=cover,g=face/21/2026/04/2026041507172482136_1.jpg)



![Yang Chi-seung, who suffered a 1.5 billion won fraud loss, spoke up: "I sold my car to get my membership fees refunded," in tears [Mi-woo-sae]](https://image.starnewskorea.com/cdn-cgi/image/f=auto,w=567,h=378,fit=cover,g=face/21/2026/04/2026041908071497190_1.jpg)
![Wife: "149kg husband's eating habits are terrifying" Shocking visuals from [Hell's Marriage]](https://image.starnewskorea.com/cdn-cgi/image/f=auto,w=567,h=378,fit=cover,g=face/21/2026/04/2026041908493495201_1.jpg)




