Seung-jin, who is preparing for an audition to pursue his ambition of becoming a singer, moves into a new studio apartment. On the first night, as he just started to settle in, he hears a woman wailing from next door. With all the noise she makes owing to her badly soundproofed room, La-ni has driven away several neighbors. Seung-jin isn't one to back down easily. Their argument intensifies to the point that they have discovered everything about one other's life through their noises save for their names and faces.
Ryoko Matsumura is a popular writer in her 50's. She also knows that she has Alzheimer’s. Ryoko Matsumura begins to teach at a university. She meets a young Korean man in his 20's. They become attracted to each other.
Hà Mi is a young musician that has a great passion for composing music. G-Feel - a genius musician of Korea, who is facing with the pressure from his fame. Between two strangers, living in two countries, there's a special bond that is Yoon Hee. The story about that speical relationship between them is revealed when G-Feel decides to travel to Vietnam after an incident.
Yoo Da-hee, who graduated from the Department of Hotel Tourism and quickly got a job at a motel, tells the story of what happened at the motel by secretly running a podcast. A variety of omnibus episodes.
Summer is a typical girl raised by a firefighter father which inspired her to follow his footsteps. She then meets Rael by chance a couple of times. Rael realizes he actually likes Summer but proving this to her is much more difficult and challenging.