During a high school music exam to assess the singing abilities of students, Songju shows off his rapping skills despite the blackboard in the background stating that pop and rap songs are not allowed. The teacher gives him an F on the test without saying anything. In the meantime, on one side of the classroom, Juyeon looks happy, watching Songju rap. He loves hip-hop as much as Songju does although these two come from completely different backgrounds. Songju is a troubled student living in a multi-house home in a less developed area while Juyeon is an exemplary student living in a fancy apartment in a rich village. Despite differences in grade, personality, and background, they decide to form a hip-hop duo called LIMECRIME.
Seong-cheol is a high school student who grew up neglected. In order to make money in a harsh society that abandoned him, he teamed up with Gi-joon, who is two years younger than him, to use his status as a minor to make money and seek a big blow. A father who left home, a sick brother and a mother whose cares for him. Seong-cheol, who was abandoned in hellish reality, starts a desperate survival in his own way.
Young-in was brought back to life by his mother with the help of AI. However, the sweetness of seeing his son again didn't last so long. But soon, his mother realizes that the AI ‘deleted’ Young-in’s consciousness and has been pretending to be him.
Siwoo, a high school student, is timid and fragile. His only hobby is taking a picture of his daily life with a camera. However, Ha-joon and his hobby, motorcycle, come to Siwoo, who nobody is interested in. "Break" begins to occur in Siwoo's daily life.
Joon Ho is a third year high school student who just finished taking his university exam. His main interest is to sleep with Seo Yeong, his girlfriend, but, so far, she has turned him down.
Hayun is a problematic girl who only wants finish high school, Iseop is a soft-hearted boy who cries too often. Two teenagers with a very different nature come together as friends by sitting at the same table in class. They are jealous of each other because of the things they don't have though they find solace in each other's company.
A Princess in the Joseon Dynasty travels to the Qing Dynasty to marry. On the way to there, she meets a young magician and falls in love with him.
Han-jae meets gay men at a bar in Jongno District, Seoul. He first meets them through an internet site. Once they get drunk, Han-jae steals their money.
After losing both her parents, Failan emmigrates to Korea to seek her only remaining relatives. Once she reaches Korea, she finds out that her relatives have moved to Canada well over a year ago. Desperate to stay and make a living in Korea, Failan is forced to have an arranged marriage through a match-making agency.