S1E1 - Episode 1
Ha-na and her classmates are excited to start a new school year. However, Ms. Ma, is a cold-hearted witch, becomes their homeroom teacher.
June 12, 2013, midnight
S1E2 - Episode 2
The students of Class 6-3 are very upset about Ms. Ma's unorthodox way of teaching.
June 13, 2013, midnight
S1E3 - Episode 3
Ha-na feels bad seeing Bo-mi being mistreated by the other kids.
June 19, 2013, midnight
S1E4 - Episode 4
The students of Class 6-3 act differently on the day of the festival from their decision to go up against Ms. Ma.
June 20, 2013, midnight
S1E5 - Episode 5
Ha-na becomes the suspect of theft in the missing wallet case.
June 26, 2013, midnight
S1E6 - Episode 6
Even though Ha-na is bullied by the girls at the swimming pool, she doesn't voice out.
June 27, 2013, midnight
S1E7 - Episode 7
Ms. Ma is going to hold special classes during summer break, and the kids are unhappy about it.
July 3, 2013, midnight
S1E8 - Episode 8
Na-ri's mother tries to cover up her daughter's incident. Meanwhile, Ha-na, Bo-mi, and Dong-gu meet Seo-hyun's mother.
July 4, 2013, midnight
S1E9 - Episode 9
Seo-hyun overhears her mother and the doctor's conversation and finds out that Ms. Oh's days are limited.
July 10, 2013, midnight
S1E10 - Episode 10
Sooner or later, the students will realize how stupid their choices are and face the consequences.
July 11, 2013, midnight
S1E11 - Episode 11
Do-jin, who left school for a new life in Canada, returns to school, but not everyone welcomes him.
July 17, 2013, midnight
S1E12 - Episode 12
Ms. Ma intends to transfer Dong-gu to another school, but his classmates try to stop that from happening.
July 18, 2013, midnight
S1E13 - Episode 13
Parent-teacher meetings get underway, and Ms. Ma has no intentions of hiding the truth from their parents.
July 24, 2013, midnight
S1E14 - Episode 14
Although Ms. Ma thinks foolishly of Ha-na's question, Ha-na tells her she believes she is a good teacher.
July 25, 2013, midnight
S1E15 - Episode 15
The kids are coming out aggressively against Yeo-jin's suspension. They are willing to do whatever it takes.
July 31, 2013, midnight
S1E16 - Episode 16
Grade six has come to an end. The children will become decent middle school students thanks to Yeo-jin.
Aug. 1, 2013, midnight