This is a conflict driven romance/drama. Both leads have issues with betrayal. So the series start with the plot pretty much laid out . What makes this so delectable are your main characters. Sung Hoon a true alpha male & Song Ji Eun the cute girl, who needs her big strong man. Sung Hoon can make any heart flutter, he is handsome, his voice is strong & he brings a sensitivity to this character. I love how they brought in the swimming since he came from a professional swimming background. Song Ji Eun played that girl, you know the adorable , the beautiful, but cute, but strong, but needs her man & has so much angst from her upbringing. All in all it is a series I could watch over and over. Whenever a person needs that feel good hit this is a must have. Not to mention the supporting cast was stellar, there wasn't any bad acting that I could see .