At eighteen, Choi Jun Woo (Ong Seong Woo) has solidified his position as a perpetual loner. Unable to adequately express his emotions, he often comes across as unsympathetic or aloof, when in reality, that couldn't be further from the truth. Underneath his lonely exterior lies a cute, goofy young man who just needs the right people around to bring this side out more often.
When Jun Woo transfers schools, he meets Yoo Soo Bin (Kim Hyang Gi), a top student who has spent her entire life being controlled by her overbearing mother. Suffocated under her mother's care, Soo Bin spends most of her life dreaming of the day she becomes an independent woman.
Meanwhile, Ma Hwi Young (Shin Seung Ho), seems like the perfect gentleman. Strong and confident on the outside, Hwi Young seems like he has it all, but on the inside, he's just a timid eighteen-year-old boy trying to find his place in the world.
Each student has their own set of struggles but when they come together, they find their lives slowly begin to change.