A childhood accident left Irin with a unique ability for frequency and sound, which most people cannot decipher. Her skills were tested when she took an emergency call at the precinct and had to endure her father’s murder in progress. Following a series of other similar deaths, she searches for his killer, which unveiled a web of corruptions and deceit.

Tadd is a beautiful and humble girl. After finishing her studies, she receives a marriage proposal from her mother's family rich friend. But soon it becomes clear that the behavior of her future husband is of great concern. The creeping doubt was quickly dispelled and the wedding took place. Only after the wedding, she realizes that nothing changed for her husband, and she is doomed to loneliness, neglect, and scandals. Will Tadd find the strength to break this burdensome relationship or will she accept this fate?

What will happen if a love & relationship columnist becomes heartbroken!? Nam, a relationship expert of "H2O" — her own founded magazine, has faced devastating moment in her life as her fiancé broke up with her, out of the blue, to marry someone else. Nam felt like a love hurt victim(instead of an adviser), which is difficult to speak out. While Nam tries to keep her chin up, a cupid sends her three PERFECT guys just in time!: Dog, a TV producer and Nam's best friend, Jo, a warm-hearted consular officer, or Ohm, a handsome flirty tycoon. Who will be the one who finally heals Nam's brokenhearted status while whose hearts have to be next broken...?