Pop and Note form their own musical band called The Roommate to weave their dreams of becoming artists. Being a band needs a rule, that is moving in the same house as roommates as they believe it's the way getting to know more about each other. But things in their house change when Pop and Note need to add a lead vocal in their band.
The story takes place at the College of Music, Mahidol University over one year and covers the three seasons that Bangkok typically experiences - summer, winter and monsoon.