Mi Amor (Choi Siwon/Yoon Eun Hye/Song Joong-ki)

What would you do if everything you believed about love suddenly changed? Will you still want to fall in love?

Andy Lee is a passionate photographer who takes pleasure in making people smile. She's in a happy relationship with her boyfriend, Brandon Kim, who's a new lawyer. But what if that happy relationship turns bitter?

Along comes a good friend, Sean Vermont, the son of a wealthy business man. Sean wants to explore the different sides of the world. He's always full of optimism despite his toxic relation ship with his father. When he meets Andy, he's taken by a surprise because she is bubbly, happy, and caring.

Three lives will change forever because of one mistake.