Hyper Knife Ep 1-2 Recap: Park Eun Bin’s dark past unfolds as her mentor Sol Kyung Gu asks for help in performing critical surgery
Hyper Knife episodes 1 and 2 are out and packed with suspense! Dive into the dark past of Park Eun Bin and her mentor, Sol Kyung Gu, and uncover the shocking reasons behind Park Eun Bin's surgery ban.

Grab the popcorn and settle into your favorite spot at home because it's time for Hyper Knife. If you're not familiar yet, don't worry; we've got you covered. Hyper Knife, starring Park Eun Bin and Sol Kyung Gu, is a medical thriller that has been one of the most highly anticipated series of 2025. On March 19, 2025, Disney Plus released the first two episodes of this gripping drama. Without further ado, let's dive into a recap of what went down in episodes 1 and 2.
Hyper Knife follows the story of two neurosurgeons: Jung Se Ok (played by Park Eun Bin) and Choi Deok Hee (played by Sol Kyung Gu). After losing her medical license, Jung Se Ok is a once-promising neurosurgeon who turns to illegal surgeries to satisfy her unyielding passion for neuroscience. She's now disgraced but still determined to prove herself.
Choi Deok Hee, on the other hand, is one of the world's finest neurosurgeons, who once saw potential in Jung Se Ok and took her under his wing. However, their relationship takes a dark turn as Jung Se Ok's choices begin spiraling out of control.
In episode 1, Choi Deok Hui bans Jung Se Ok from the operating room. But when an emergency arises, Jung Se Ok can't stay away and sneaks back into the operating room to perform surgery. As the lead surgeon, Choi Deok Hee soon discovers she's returned and drags her out. In a fit of rage, Jung Se Ok loses her composure, snatches an IV tube, and follows the professor. In a shocking moment, she uses the IV tube to strangle Choi Deok Hee after he slaps her while trying to escape.
These intense developments set the stage for the dark, high-stakes drama that Hyper Knife promises to deliver. Stay tuned for more thrilling moments as the series unfolds!
Episode 1 shows a year later, Choi Deok Hee visits Jung Se Ok in Paju and reveals that he has been diagnosed with brainstem glioma. Upon hearing the news, Jung Se Ok sarcastically suggests that Ha U Yeong or Alan Kim should be the ones to operate on him. However, Choi Deok Hee insists that she is the one who must perform the surgery. When Jung Se Ok refuses, he threatens to expose her illegal activities, reminding her of the time when the police were chasing her.
The episode also shows a tense moment when the police visit Choi Deok Hee, informing him that a surgeon is performing an illegal operation. Though the surgeon’s face is initially hidden, Choi Deok Hee recognizes that it is none other than Jung Se Ok. He pretends not to know who it is, but it’s clear he is aware of her involvement. Jung Se Ok, along with her junior Se Yeong Joo (played by Yoo Chan Young) and Dr. Han Hyun Ho (played by Park Byung Eun), is shown operating on a gangster.
The surgery they perform mirrors the one Choi Deok Hee was shown earlier. During the procedure, Jung Se Ok asks Se Yeong Joo about the nurses assisting them, to which he reveals that they are terminated nurses—fired for malpractice, assault, and drugging patients. The nurses try to threaten Jung Se Ok into raising their pay, and she reluctantly agrees.
But the real twist is revealed in Episode 2, which takes a deeper dive into the past. Choi Deok Hee warned Jung Se Ok to be cautious about her residence during her first day at Yeonshin University. Jung Se Ok, intrigued by neuroscience and the power of surgery, approached Choi Deok Hee and eventually became his mentee. As time passed, she earned his favor and became his favorite student.
However, things changed drastically when Choi Deok Hee asked Dr. Han Hyun Ho to have Jung Se Ok perform surgery. Han Hyun Ho, unable to persuade her, failed. Jung Se Ok fails to control her anger and the situation she is in, which she can't control. Frustratedly, she burned all the research papers and medical notes she had compiled under Choi Deok Hee's guidance.
In the following scenes, it's revealed that Choi Deok Hee was supposed to choose Jung Se Ok for further studies, but he instead replaced her with another student, Ha U Yeong. This betrayal drives Jung Se Ok to the brink, and she storms into Choi Deok Hee's office, confronting him for being unfair. She learns that the guest in the room is Ha U Yeong's mother, and out of rage, she also criticizes her. The confrontation escalates, and in a fit of anger, Choi Deok Hee slaps Jung Se Ok, permanently banning her from the operating rooms.
At present, the audience can see that Jung Se Ok is frustrated with her life. She is more calm now but hides a storm inside her heart. She begins to realize that she is being stalked by Kwon Shi Gu (played by Lee Tae Young). He keeps a constant watch on her house and follows her every move. Kwon Shin Gyu, an ex-convict, has a dark past, including physically assaulting his elder sister. He previously tried to make advances toward Jung Se Ok but failed every time. Despite this, he continues to take chances.
At a breaking point, Jung Se Ok decides to take matters into her own hands. She invites Kwon Shin Gyu to her house and, fed up with his relentless behavior, ends up killing him. By the end of episode 2 of Hyper Knife, Jung Se Ok asks Seo Young Joo to help clean up the blood. She then takes Kwon Shin Gyu's body to bury it.
While burying the body, Jung Se Ok notices someone approaching and quickly hides the corpse. When she turns to see who it is, she is shocked to find it's none other than Choi Deok Hee, who witnessed her carrying Kim Shin Gyu's body. The episode ends with this shocking twist, leaving viewers with countless questions and eager anticipation for the next episodes.
Several questions arise from Episode 2:
- Will this incident become an advantage for Choi Deok Hee in the future?
- What actions will Jung Se Ok take next?
- Will this murder push her to commit another crime?
- How will the situation unfold for Jung Se Ok moving forward?
- In the near future, will she return to neurosurgery, or will she find herself behind bars for the murder?
With so many mysteries unfolding and unexpected twists around every corner, the excitement for Hyper Knife only grows. Episodes 3 and 4 will drop on March 26, 2025, at 12:30 PM (KST) every Wednesday, leaving fans eagerly awaiting what's next. Will Jung Se Ok's secrets be exposed? What will happen with Choi Deok Hee's discovery?
Catch the thrilling series on Disney Plus and Hulu as it unravels its suspenseful plot. Directed by Kim Jung Hyun, with a script by Kim Sun Hee, Hyper Knife promises an unforgettable eight-episode journey. Stay tuned for more updates as the tension builds!