The journey toward freedom for the pirate crew known as 'The Red Fox' hits an unexpected snag when a young widow washes up on their ship. The woman begs to be taken to an island marked on a mysterious map she carries, promising to hand over her entire fortune in return. For the sake of his poor, powerless crew, Captain Seonghyeon would never let an opportunity like this slip away. At least, that's what his crew assumes. Seonghyeon, as it turns out, has other plans entirely.

Martin Park knows exactly what it feels like to stand at the edge of a cliff. He'd been there himself, twelve years ago. So when Martin discovers his closest friend planning to end everything in that very same place, he shows up, just as that person once showed up for him.

Zhao Yufan crosses the sea to keep a promise. An old promise, made long, long ago. What he never imagined, never once saw coming, was that keeping that promise would mean becoming the very person most despised-especially by the one person he wanted, above all else, to protect. But a promise is a promise. Whatever road lies ahead, it has to be kept.

Kim Juhoon meets a mysterious girl while attending the lantern festival. They promise to meet again the following year, at the very same spot. But no matter how many times he searches, the girl is nowhere to be found. Unable to bear the longing any longer, Juhoon decides to find out the truth. Who is she, really?

The revenge plan Ahn Keonho had spent over a decade weaving had never once come close to fruition. But the moment 'that one girl' walked up to his stall asking for his help, Keonho was certain the universe had finally turned in his favor.