Be warned as I have some spoilers in my review. They are necessary to explain why I give this show such a low rating.
I enjoyed the the first 4 episodes. The story was fun and different. In episode 5 the story, to me, went wrong. The spoiled and babyish male co-lead, Gun-hee, leaves the female lead, Yu-bin, stranded at sea. He doesn’t know that she is found unconscious on the beach. Later that night he worries and a search is conducted. He is panicked. She ends up apologizing to the manager but Gun-hee acts as if nothing happened. No charges and no investigation of an almost fatal act! That is just one of his spoiled child actions. He verbally abuses her on a regular basis. He acts as if she is a toy not someone he loves.

Seung-hyun, the other male co-lead, starts out as an iceberg. Yu-bin’s melts his heart with her overwhelming love. Irrationally he abandons her. Why? To not create problems with his just discovered half brother, Gun-he, who he dislikes and wants no part of. His mother, who suffered something similar to Yu-bin’s being dumped, has no problems with this. I just became more and more irritated with the story line as it progressed. If it had been played for humor I could have laughed but as drama it was idiocy.

Sung Yu-ri stood out as Yu-bin. She made me believe in her innocent, naive and bubbly character.