Series Information

Original Title: 이강에는 달이 흐른다 (Igang-eneun Dal-i Heuleunda)

Country: South Korea

Genre(s): Historical, Romance, Fantasy

Episode Count: 16 Episodes (Projected)

Where to Watch: tvN (Potentially Netflix or Viki for international fans!)

Air Date: October 31, 2025

The Premise

Get ready for a whirlwind of fantasy and fate! 🌪️ We follow the heartbroken Crown Prince Yi Gang, who is so consumed by a quest for revenge after the death of his crown princess that he's completely forgotten how to smile. But his carefully laid plans go haywire when he meets Park Dal I, a cheerful traveling merchant who is the spitting image of his deceased love and—PLOT TWIST!—they mysteriously swap bodies! Can you imagine the chaos?! 🤯

Why Jiejie is Excited

Okay, everyone, let's talk tropes! 💖 A body swap is a classic for a reason, but setting it in the Joseon era with palace politics swirling all around?! SIGN. ME. UP! This is not your average switcheroo, friends. Imagine our stoic, revenge-driven prince suddenly trapped in the body of a common merchant, having to haggle and navigate a world he's never known. And our sweet, memory-less merchant has to pretend to be royalty while probably being completely clueless about court etiquette. The potential for comedy, identity crises, and heart-fluttering moments when they have to work together is off the charts! It’s the ultimate ‘walk a mile in their shoes’ story, and I am SO ready for the emotional rollercoaster. 🎢 Bring on the feels!

What to Look For

What to Look For

Beyond the fun and games of the body-swap, let's put on our thinking caps! 🧐 The real core of this story seems to be about healing and identity. Yi Gang has lost his happiness to grief, and Park Dal I has lost her entire past. The central question of the series seems to be: Can you truly find yourself by becoming someone else? By literally living each other's lives, they're forced to confront their own pain from a completely new perspective. I'll be watching to see how this magical situation helps them piece their own souls back together. It’s not just about falling in love; it's about learning to love yourself again. ❤️‍🩹

Call to Action

So what do you all think?! Does this premise have you as excited as I am? 🥳 Are you adding Moon River to your watchlist? Let me know all your thoughts on this fantastic body-swap plot in the comments below! 👇