🌕Moon River (2025) K-Drama: Cast, Story, Release Date & Everything You Need to Know!

“When the moon rises over the river, fate flows with it.” 🌙

Get ready to be swept away by a tale of royalty, revenge, and reincarnated love! The highly anticipated historical-fantasy K-drama Moon River (이강에는 달이 흐른다), starring Kang Tae-oh and Kim Se-jeong, premieres November 7, 2025, exclusively on Viu and MBC TV.

This sweeping romance isn’t just another period drama — it’s a mystical, emotionally charged story where destiny bends time itself. After a heartbreaking loss, a prince consumed by vengeance meets a merchant who looks exactly like his deceased wife… and when their souls are swapped by fate, everything he believes begins to unravel.

👑 Moon River (2025) – Quick Overview

Title	Moon River (이강에는 달이 흐른다)
Genre	Historical, Fantasy, Romance, Melodrama
Main Cast	Kang Tae-oh, Kim Se-jeong, Lee Shin-young, Hong Su-zu
Director	Lee Dong-hyeun (Bitter Sweet Hell)
Writer	Cho Seung-hui (More Than Friends)
Production Studio	High-Zium Studio
Network	MBC TV / Viu
Episodes	16 (TBA)
Release Date	November 7, 2025
Airtime	Fridays & Saturdays, 21:50 (KST)

🌒 The Story – When the Past and Present Collide

In the kingdom of Joseon, Crown Prince Lee Kang (Kang Tae-oh) has lost everything — his beloved crown princess, his smile, and his faith in the world. Consumed by grief and revenge, he devotes his life to avenging the one woman who gave him peace.

But fate takes a wild turn when he meets Park Dal-i (Kim Se-jeong), a low-born merchant who looks exactly like the late crown princess. During a mysterious night under the moonlit river, their souls are swapped, binding them in a web of chaos, deception, and destiny.

“He lost his heart to vengeance… until he found her face again.”

As Lee Kang navigates life in Dal-i’s body, and Dal-i wakes up in the body of a prince, they must uncover the truth behind their fateful connection — and the secrets that tie their souls together.

🌸 Main Cast & Characters

🕊️ Kang Tae-oh as Crown Prince Lee Kang

After dazzling fans in Extraordinary Attorney Woo, Kang Tae-oh returns in his first post-military role — and it’s one for the ages. Lee Kang is a ruler torn between duty and heartbreak. When fate steals his identity, he learns that love can heal even the deepest scars — if he dares to feel again.

“He lost his crown, his love, and his laughter… until she looked back at him.”

🎎 Kim Se-jeong as Park Dal-i / The Crown Princess

Kim Se-jeong (Business Proposal, Uncanny Counter) delivers a dual performance as both the late Crown Princess and the humble merchant who unknowingly carries her soul. Dal-i’s journey from forgotten merchant to royal imposter tests her courage — and her heart — as she discovers a love that defies life and death.

⚔️ Lee Shin-young as Prince Jeon

The ambitious cousin of Crown Prince Lee Kang, Prince Jeon hides a dangerous secret. His loyalty is uncertain, and his ambitions could destroy the fragile peace of the palace.

💫 Hong Su-zu as Kim Woo-hee

The kingdom’s “perfect lady” — beautiful, brilliant, and trapped by the expectations of her family. Her friendship with Dal-i soon becomes the key to uncovering the truth behind the crown princess’s death.

⚖️ Supporting Cast Highlights

• Jin Goo as Kim Han-chul – The King’s trusted advisor with dangerous motives.

• Nam Gi-ae as Queen Dowager Han – The royal matriarch who knows more than she reveals.

• Park Ah-in as Park Hong-nan – Dal-i’s fierce but loving mother.

• Kim Ki-hong as Dal-i’s father – The merchant who unknowingly guards royal secrets.

Each character adds depth to Moon River’s layered intrigue — where loyalty is fleeting and every smile hides suspicion.

🌕 Behind the Scenes – The Team Behind the Magic

Directed by Lee Dong-hyeun, known for Bitter Sweet Hell (2024), and written by Cho Seung-hui, who penned More Than Friends (2020), Moon River promises cinematic storytelling, heart-wrenching romance, and masterful historical world-building.

Produced by High-Zium Studio (Crash Landing on You, Doctor Cha), the drama blends stunning period visuals with supernatural mystery — think Mr. Queen meets Lovers of the Red Sky, but darker and more poetic.

💞 Why You Should Watch Moon River

✅ Kang Tae-oh & Kim Se-jeong’s first on-screen pairing — chemistry that already has fans buzzing.

✅ Soul-swap fantasy with royal intrigue — blending revenge, reincarnation, and romance.

✅ Visually breathtaking — shot on location with sweeping cinematography and moonlit sets.

✅ Emotional storytelling — explores grief, destiny, and redemption with nuance and passion.

🧭 Where to Watch

📺 Streaming: Viu (Worldwide)

📅 Premiere: November 7, 2025

🕒 New Episodes: Fridays & Saturdays at 9:50 PM KST

Episodes will be available with English subtitles shortly after broadcast on Viu for global viewers.

🌙 Fan Buzz & Early Hype

The trailer for Moon River racked up over 5 million views in 48 hours, with fans praising its haunting visuals and emotional depth. Social media is already dubbing it “the next Scarlet Heart: Ryeo.”

“Kim Se-jeong’s transformation is unreal — this is her best role yet.”“Kang Tae-oh’s eyes tell a story even when he says nothing.”“Moon River feels like old-school K-drama magic — but with a twist.”

💬 Final Thoughts – A Royal Tale of Love and Fate

Moon River isn’t just another historical romance — it’s a spiritual journey through grief, revenge, and rebirth.It reminds us that love never truly dies; it simply finds a new body to live in.

“Under the same moon, two souls meet again — one seeking vengeance, the other redemption.” 🌕

⭐ Verdict: 9.5/10 – Visually stunning, emotionally rich, and destined to be a fan favorite.If you love Mr. Queen, Alchemy of Souls, or The King: Eternal Monarch, this drama will steal your heart.

📢 Moon River Premieres November 7, 2025

📍 Watch exclusively on Viu and MBC TV.

👑 Don’t miss the K-drama event of the year.