Kim Jongin was a fun loving trainee of SM ent until his Omma died due to cancer. He had become very cold since then. But soon he found his true love who lightened up his life and brought a smile on his face again. But all of a sudden she leaves him. He was badly hurt but he stayed strong for s and never told his secret to anyone. 

 

Do Kyungsoo was new trainee of SM ent. Him and Kai got really close within few months. But still he never knew why Kai was a cold person. He knew about Kai's Omma but he didn't know about Kai's previous relationship. What happens when D.O falls in love with Kai's ex girlfriend. 

 

Jennie Kim was a solo artist of YG ent. and became very successful within a year. She had been dating an EXO-K member called Kai even before she joined YG ent. She then breaks up with him suddenly leaving him heart broken. But who knew, Kai's own best friend D.O would fall in love with her.

 

Let's see what happens when Kai comes to know about D.O's feeling towards Jennie Kim. Will he be angry? Or will he accept it?