SYNOPSIS

On the day of the 30th anniversary celebration of diplomatic relations between South Korea and China, Hana, the president's daughter, suddenly disappears together with her bodyguard. Chief of Security Cha Jeong-hak is reminded of a similar incident that took place thirty years earlier.

In 1992, South Korea and China are preparing for a historic summit meeting. Han Mu-young and Cha Jeong-hak are recruited as the top two graduates of the presidential security service. Jeong-hak resents always coming in second place, but the two men become close friends as they train together.

After a secret meeting between the leaders of the two nations, Mu-young and Jeong-hak are assigned to protect an unidentified person whose identity cannot be disclosed. She is a young female interpreter who attended the secret meeting and, apart from the two leaders, is the only person who knows its confidential details. She soon becomes a target for elimination.

In 2022, Hana is a high school student and an accomplished violinist. She is both a close friend and a rival of Suji. Hana wants to borrow a score from the Blue House library, but the librarian refuses, insisting that Hana must return all the books she has borrowed before taking out another one. The score contains a strange sequence of musical notes, and Hana and Suji become curious about its meaning.

At school, Hana receives special treatment because she is the president's daughter. As a result, she becomes the target of jealousy and exclusion from her classmates. Hana wants to escape from all of it.

Meanwhile, security officers searching for Hana discover graffiti on a door inside the Blue House that reads, "Mu-young was here." The words bring back Jeong-hak's memories.

Back in 1992, one week after they begin protecting the mysterious person, Mu-young and Jeong-hak hear a scream from inside her residence. They rush in and discover that the person they are protecting is a young woman. Over time, both men develop feelings for her.

The chief chef of the Blue House believes Jeong-hak and the librarian are well suited for each other and arranges for them to meet. While catching the librarian as she falls, Jeong-hak accidentally kisses her. Even so, his heart remains with the woman he is protecting.

Later, Jeong-hak returns to the residence and finds Mu-young and the woman in an awkward position on the sofa. Misunderstanding the situation, he quietly turns away. Misunderstanding the situation, he turns away. He tells his superior that he has something important to say.

In 2022, the security team finds Hana's mobile phone. Sang-gu reads the hostile messages her friends have sent and impulsively replies to one of them, earning a scolding from Chief Jeong-hak. Sang-gu and the missing bodyguard Dae-sik are both assigned to protect Hana.

According to Sang-gu's briefing, Hana and her friends participated in a violin competition. Suji was initially announced as the winner, but the result was later overturned because of a counting error, and Hana was declared first place instead. Hana's friends accuse her of benefiting from favoritism. Upset and overwhelmed, Hana throws away her phone and runs away. Dae-sik follows her to persuade her to return.

Back in 1992, reporters whisper that the interpreter knows too much and will soon be eliminated. Mu-young overhears them and comforts the woman as she cries.

In 2022, Jeong-hak discovers the old score in the library. Looking at the graffiti that reads "Mu-young was here" and "She was here," he cries out that he wants to return to the days before tragedy struck.

Back in 1992, a funeral is held. Rain pours down as the National Security Planning Agency announces that Mu-young was a spy. Jeong-hak is tortured and transferred to a military special forces unit.

In 2022, Suji visits her father, Chief Jeong-hak. Suji has kept it a secret from everyone—including Hana and her friends—that she is the daughter of the Chief of Security. After hearing that Hana has disappeared, she recalls a place where Hana might have gone.

Hana and Dae-sik are lost in the mountains where an explosion occurred thirty years earlier. Neither of them brought a mobile phone. They discover a mysterious glass bottle containing a piece of cloth covered with musical notes. Hana realizes that the handwriting is identical to the score she found in the library and concludes that the notes are a code.

Back in 1992, the woman tells Mu-young why she became a target. The two gradually fall in love. She reveals that the strange sheet music is actually a code she invented to conceal secret messages. Together they write notes on musical scores and enjoy each other's company.

The misunderstanding that drove Jeong-hak away is finally explained. The woman had jumped onto the sofa after being startled by a mouse, and Jeong-hak happened to see them at that moment. Believing they were romantically involved, he requested a transfer.

Mu-young happily continues to draw coded musical notes even while on duty, but Jeong-hak remains cold toward him. The woman tells Mu-young that she will return to China after the diplomatic ceremony. Mu-young replies that he is willing to leave the security service and follow her anywhere. The two confess their love.

Soon afterward, Mu-young and Jeong-hak learn from the reporters that the woman is going to be killed. Mu-young rushes to her side. Jeong-hak tries to follow but is stopped by the security unit.

During their escape, Mu-young is injured, but he manages to flee the Blue House with the woman and heads into the mountains. There they find a storage site filled with pine pollen dust.

Mu-young tells her to descend the mountain alone. After making sure she is at a safe distance, he ignites the pine pollen with a lighter. The explosion engulfs the mountain, and Mu-young dies in the blast.

In 2022, Hana and Dae-sik hear the sound of a violin from below and shout for help. Suji and the security team have found them.

Together, Hana and Dae-sik decipher the coded message hidden inside the cloth from the glass bottle and read it aloud to Jeong-hak. Hana and Suji reconcile and renew their friendship.

After everyone has left, Jeong-hak encounters Mu-young once more in the mountains.

The coded message turns out to be a warm and heartfelt letter Mu-young left for her and his dearest friend.

On the 30th anniversary celebration of diplomatic relations between South Korea and China, Hana and Suji perform together, singing an arrangement based on the melodies preserved in the old scorebook. The woman, now living in China, returns to attend the ceremony.

Jeong-hak returns to her the necklace with its attached pocket watch found in the mountains and gives her the letter Mu-young left behind.

Then he tells her that Mu-young is doing well.

Mu-young's spirit smiles brightly as he watches the two of them.


REVIEW

This was my first Korean original jukebox musical.

The plot itself is fairly simple. A disappearance in 2022 leads Chief of Security Cha Jeong-hak to revisit a tragedy from thirty years earlier involving friendship, love, sacrifice, and a national secret. The story moves back and forth between 1992 and 2022, with numerous side plots and supporting characters, but the emotional core remains straightforward.

What surprised me most was how naturally the songs fit into the story. There are moments where the connection feels slightly forced, but that is also part of the charm of a jukebox musical. In that sense, The Days reminded me of Mamma Mia!.

Kim Kwang-seok's songs are deceptively difficult. They are not showy numbers built around high notes. Instead, they rely on mid-range melodies, subtle phrasing, and an effortless delivery that can be challenging for musical actors accustomed to projecting emotion strongly.

Sandeul, who played Mu-young, was excellent. I barely recognized him at first. He has gained muscle, slicked his hair back, and looks very different from his earlier image, so I had to check with my opera glasses. Yet his voice immediately gave him away. His rendition of "그녀가 처음 울던 날" (The Day She First Cried) was particularly memorable. He sang with restraint and ease, capturing the natural quality that makes Kim Kwang-seok's music so distinctive.

Um Ki-joon, who played Jeong-hak, gave a strong dramatic performance. Although the role spans three decades, he made the transition from a young and conflicted officer to the seasoned Chief of Security entirely convincing. However, I found his singing difficult to listen to at times. It was not an issue of range or musicality. Rather, his breath support seemed unstable. The volume would suddenly drop in the middle of a phrase and then swell again when he pushed harder. Because Jeong-hak sings many of the major numbers, the inconsistency was hard to ignore.

The young actress playing the president's daughter left a good impression as well. Her spoken delivery was excellent. She tended to round her diction a little too much while singing, giving some phrases an old-fashioned flavor, but overall she sang beautifully.

I also wished Lee Ji-soo, who played the Interpreter, had more songs. Every time she appeared on stage she drew attention, yet her vocal moments felt surprisingly brief.

The two modern bodyguards were perhaps the most lovable characters in the show. Dae-sik is a dependable but timid bodyguard recruited through judo, while Sang-gu is an awkward and comical nerd recruited through an AI special program. Sang-gu casually refers to the missing president's daughter as "that girl," much to everyone else's frustration. Their contrasting personalities provide much of the show's comic relief.

The Sang-gu actor excelled at physical comedy and knew exactly how long to hold a joke for maximum audience reaction. His awkward mannerisms, nerdy charm, and tendency to call the missing president's daughter "that girl" made him one of the most endearing characters in the show.

Dae-sik, who accompanies Hana throughout her disappearance, is a dependable yet timid bodyguard recruited through judo. He sang with a warm and stable baritone that was neither overly heavy nor showy, and his earnest personality made him instantly likable.

The chemistry between the two bodyguards was delightful. They were simply adorable.

The ensemble seemed to have been cast as much for athleticism as for singing. There were acrobatic movements, rolling falls, and even scenes reminiscent of taekwondo demonstrations. Their harmonies were relatively simple, but they sounded solid and unified. I was reminded of productions where ambitious arrangements sometimes fall apart live; The Days wisely keeps the ensemble writing manageable.

The stage design was ambitious. Three layers of string curtains, movable dividers, projections, and multi-level structures transformed the Blue House and the mountain landscape. The Blue House scenes, with tall green walls assembled from moving panels and the presidential emblem placed at the rear, were especially effective. Some projections, particularly the cracks opening in the mountain scenery, reminded me of Doctor Who. At other moments, the layered stage space brought to mind Death Becomes Her.

The stage was not flawless. At times it felt busy and slightly chaotic, and not every visual idea landed perfectly. Yet the production did not lack energy or ambition.

Most importantly, The Days is surprisingly universal. Although it is set against the backdrop of Korea-China diplomatic relations, the heart of the story is friendship, love, sacrifice, and regret. The setting could be moved to another country, or even an imaginary one. The emotions would remain exactly the same.

However, a jukebox musical is designed around the pleasure of hearing familiar songs woven seamlessly into the story. If The Days is ever performed abroad, its success will depend on whether the songs can move audiences who do not already know them.

I believe they can.

Kim Kwang-seok's songs are beautiful in their own right. Their emotional honesty and melodic simplicity transcend language and cultural boundaries. Moreover, the lyrics can be adapted during translation to fit the new context more naturally. In fact, a localized production might even strengthen the connection between the songs and the story.

The setting may change. The lyrics may change. But as long as the emotions survive, The Days will remain The Days.