It wasn't supposed to happened, they were polar opposites, one way or another they would get hurt, but within all the pain and struggles lies a love that would break all boundaries

Yun Hee, named after her mother's favorite flower; the lotus, is a cheerful girl who's always optimistic and looks for the good in people. She is a talented violin player who treasures her father's violin more than anything. However, even all her brightness couldn't prevent the tragedy that striked on her 7th birthday. 

Park Chanyeol, nicknamed the happy virus by his group of friends who call themselves EXO-K is your typical popular guy who all the girls would fall for, but beneath all the smiles and charms is a guy who wants nothing but his other half, who he can be real to without worries. Growing up a normal life sorrounded by friends, Chanyeol thought he had everything.

These two individuals meet in the most unexpected situation and begin to know how much love can hurt and bring bliss at the same time. But at what cost are they willing to fight for what they believe in??