Moonlit Vow Korean Drama With English Subtitles
“Moonlit Vow” is a romantic mystery melodrama that intertwines destiny, heartbreak, and secrets hidden beneath moonlit nights. The story follows Han Soo-yeon, a warm-hearted painter who has lost her memories, and Kang Ji-ho, a disciplined prosecutor whose life is driven by a tragedy he has long buried. Their paths collide on a night when the moon glows strangely bright, pulling them into a promise made years ago—one neither of them remembers.
Opening Scene – “A Fragment of the Past”
(English Subtitle)
Soo-yeon: “Why does the moon feel familiar… even when everything else doesn’t?”
The drama opens with a dream-like scene of young Soo-yeon running through a forest lit by moonlight. A boy holds her hand tightly and whispers, “When the moon turns blue, find me again.” Before she can see his face fully, the dream shatters, replaced by her waking up in a small seaside village where she has been living for the past three years after losing her memory in an accident.
Soo-yeon works at a local art studio, painting seascapes and trying to rebuild her identity. She doesn’t remember her past, but she consistently draws the same mysterious boy—his face blurred, his presence haunting.
The Male Lead – “A Man Chasing Justice”
Kang Ji-ho is introduced as a sharp, emotionally reserved prosecutor in Seoul. His life is governed by discipline and an unspoken sorrow. Years ago, his childhood friend disappeared suddenly after leaving him a pendant with a moon engraved on it. Since then, Ji-ho has dedicated himself to solving missing-person cases and uncovering buried crimes.
(English Subtitle)
Ji-ho: “Truth doesn’t disappear. People just hide it well.”
Ji-ho stumbles across a cold case file connected to the same seaside town where Soo-yeon lives. Believing there is unfinished business, he travels there—unaware that fate is already working to reunite two souls from the past.
First Encounter—”The “Moon Recognizes First”
Their first meeting is quiet but powerful. Soo-yeon is sketching at the harbor during a full moon when Ji-ho accidentally bumps into her. A sudden breeze blows her sketchbook open, revealing a drawing that shocks him—it is the pendant’s moon symbol, the exact same shape he has held onto for years.
Soo-yeon doesn’t understand why Ji-ho looks at her as if he’s seeing a ghost. Ji-ho doesn’t understand how this woman he’s never met draws symbols tied to his past.
(English Subtitle)
Ji-ho: “This moon… Why do you draw it?”
Soo-yeon: “I don’t know. I feel like I’m supposed to remember something… someone.”
A spark of recognition flickers, not from memory but from something deeper.
Unraveling Secrets—A Promise Buried in Time
As days pass, Soo-yeon and Ji-ho meet again and again—at the art studio, the lighthouse, the village market. Ji-ho senses that Soo-yeon’s amnesia is connected to the case he’s investigating, but he hides the truth to avoid frightening her.
Meanwhile, Soo-yeon experiences intense flashbacks whenever the moon is bright—a hand holding hers, a familiar voice, the sensation of running. Her heart recognizes Ji-ho before her mind does.
(English Subtitle)
Soo-yeon (whispering): “Why… why does your voice feel like home?”
Ji-ho begins helping Soo-yeon search for clues about her past. In her belongings from the accident, she finds a broken pendant—identical to Ji-ho’s, but incomplete. When they fit the two pieces together, a full moon appears.
It becomes undeniable: the two were childhood friends who once made a vow under a blue moon.
Conflict—”Truth “That Cuts Deep”
But the truth is far more painful than both expect.
Ji-ho discovers that Soo-yeon’s accident was not an accident—it was tied to a criminal organization he is currently investigating. Soo-yeon’s parents, both scientists, were targeted after uncovering evidence of environmental crimes involving contaminated water near the village. To protect Soo-yeon, they hid her away, but she was eventually caught in an ambush that erased her memory.
When Ji-ho uncovers this, he struggles to tell her.
(English Subtitle)
Ji-ho: “How can I ask her to remember… when the truth will destroy her?”
At the same time, Soo-yeon starts regaining fragments of memory, including the traumatic night of her accident. She also recalls the young boy—Ji-ho—who once promised to protect her.
But she doesn’t remember everything yet. The missing piece is the identity of the traitor who betrayed her family—and that person is someone Ji-ho has trusted for years: his mentor, Chief Prosecutor Choi.
Emotional Crescendo—”The “Blue Moon Returns”
The tension peaks during a village festival celebrating the rare “blue moon,’’ the same celestial event from their childhood vow.
Under the brilliant light, Soo-yeon experiences a complete memory return. She remembers the night she was chased, her parents’ desperate attempt to save her, and Ji-ho’s childhood voice promising they would meet again.
(English Subtitle)
Soo-yeon: “Ji-ho… You were the boy. You came for me again.”
The revelation brings both joy and heartbreak. Ji-ho confesses his guilt for not recognizing her sooner, while Soo-yeon weeps from the weight of recovered pain.
But they have no time to grieve—Choi moves to silence them permanently before his crimes are exposed.
Final Confrontation—”A “Vow Tested by Fate”
Ji-ho and Soo-yeon work together to gather evidence and expose the corruption. With Soo-yeon’s restored memories and Ji-ho’s investigative skills, they corner Choi. In a dramatic cliffside scene, Choi tries to kidnap Soo-yeon again, but Ji-ho arrives, risking his life to protect her.
(English Subtitle)
Ji-ho: “This time, I won’t lose you.”
Soo-yeon: “And this time… I’ll fight with you.”
With help from local police, Choi is arrested, and the truth finally comes to light. Soo-yeon’s parents’ names are cleared, and the village’s environmental crisis is exposed to the world.
Ending – “The Promise Fulfilled”
Months later, Soo-yeon continues painting—now with her full identity restored. Ji-ho frequently visits the village, helping establish a legal center to protect vulnerable communities.
On another moonlit night, they return to the hillside where they made their childhood vow. Ji-ho pulls out the repaired moon pendant and places it around Soo-yeon’s neck.
Ji-ho: “Will you stay by my side, no matter how many moons pass?”
Soo-yeon: “I already vowed to… long before I remembered.”
They kiss under the glowing moon, sealing the vow once again—this time forever.
