“When destiny returns with the tide, even memories learn to breathe underwater.”

 Synopsis: Years after their fated goodbye, a ripple between worlds awakens. A reformed conman turned investigator senses a familiar current pulling him toward an elusive myth; a mermaid who once rewrote his past swims back into a Seoul lit by secrets and storms. New rivals hunt legend for profit, science presses for proof, and an ancient sea-law threatens their bond. Every drop hides a clue—will love surface or sink?

 Verdict: Lush visuals, sharper stakes, and playful-romantic banter promise a grander, darker fairytale. If the teaser is a compass, S2 charts bolder waters.