20-year old Deok Yi’s quiet small-town life gets exciting when a former University Professor, Hak Kyu, moves in, running from the scandal of a sexual harassment allegation. He works as a literature instructor at a culture center and she works at an old amusement park. Mutual attraction leads the pair into a lusty affair, but when the fall semester begins, Hak Kyu is reinstated at the university and returns to his family in Seoul, leaving Deok Yi behind. She refuses to let the relationship die, and a confrontation between them turns tragic when Hak Kyu’s wife commits suicide. 8 years later, Hak Kyu is a popular writer, but he is barely able to see, losing his eyesight to a disease, and he's estranged from his daughter Cheong, who blames him for her mother's death. At this time, he befriends Se-Jung, a new neighbor who moves in next door. He gladly accepts her help and Cheong becomes romantically attached to her, neither realizing she is in fact Deok Yi, the woman Hak Kyu betrayed 8 years ago, now on a quest to destroy them. Her plan sets off a vengeance-fuelled chain of events that ultimately sets the three bitter, angry and desperate schemers on a twisting collision course with each other.
The story will focus on a love triangle between the three leads. Eikura plays the role of Morimoto Naoko, a girl from the countryside whose first love is her uncle, Ikezawa Masato. She follows after him to Tokyo by getting admitted into an elite medical university, but there she runs into Masato's girlfriend and colleague Aya, a beautiful and intelligent researcher who is the daughter of the university hospital's director. However, things get complicated after Naoko and Masato meet again.
Lee Ra El was a girl who idolized her loving parents – a highly intelligent father and a strikingly beautiful mother. But when cruel forces beyond their control cause her father’s death, her family crumbles. Embittered by this terrible experience, she vows revenge on the super-rich people who orchestrated this terrible tragedy. Her prime target is Kang Yoon Kyum, the CEO of the lucrative LY Group business empire, and one of the ringleaders of the plot that ultimately destroyed her family. Lee Ra El’s weapon of choice is divorce. By placing herself at the center of a legal battle worth a staggering USD 1.6 billion, she hopes to bring Kang Yoon Kyum and LY Group down once and for all. But in order to do so, she will need to wage a bitter legal struggle and fight powerful forces both inside and outside the courtroom. However, this plan has been in the pipelines for 13 years for Lee Ra El, who believes she will use all of her guile to catch Kang Yoon Kyum out when he least expects it. Can revenge bring her the satisfaction she craves – or will it end up consuming her?
Both stories focus around women seeking revenge for crimes committed against them in the past. Also, Yoo Sun is in both of them, though her role is more major in Eve. Eve has more romance and the main character is keeping more secrets, while Queen of Masks is a more a story about a tangled friend group where everyone has their own lies and love stories going on but is not exactly romantic.