I don't remembed the name but the story goes like this 

Jonghyun went to new York(?) to become a solo artist, hence breaking up shinee 

He fails and returns to find out that he left a whole lot of damage 

Key had his heart broken by the man he loves, jonghyun 

Key is also worried for taemin 

Taemin is a  

Ones tries to beat sense into taemin 

All taemin is is confused cause he looked up to jonghyun like an appa and his love, minho dumped him for a chick krystal(?)

Jonghyun tries to mmake it right once more