What kind of disease is this love?
What kind of pain is this love?
My Love is my enemy 
How should I kill it?

Kyungsoo is a pragmatic person, even his younger brother Baekhyun considers him as a coward person and teases him. His older brother by few years Suho is soon to be graduated and has to share the burden of his house members. On the other hand, Park Chanyeol, a rich spoilt brat, short-tempered fellow and belongs to an influential family. He somehow gets the clash with kyungsoo’s family after an incident. When influential offender Park Chanyeol approaches kyungsoo's family to settle the issue but surprisingly pigeon-hearted kyungsoo shows immense resistance. Park Chanyeol gives them death threats, terrified them and his intimidating behavior pushes kyungsoo to stand like an iron wall in front of him. Kyungsoo's chivalry and bravery melts Chanyeol’s heart and he falls in love with him but will kyungsoo forgive him and return his love? or will someone else steal kyungsoo’s heart?