The story is actually quite good and doesn't drag like some other dramas - a nice blend of the historical story and the present day story. The mermaid logic is quite clever. Lee Min Ho has a goofy face and he suits the part of conman better than in Boys Over Flowers and the Heirs. His comic parts are good. Gianna Jun is one of the few actresses who can pull off the cutesy role without becoming annoying. I prefer this to Love from the Star - the story is actually more interesting and complicated. You can see the writer improving her skills at the romantic comedy and leading up to Crash Landing on You which is her best work.

Worth watching.