1 - Episode 1

The KO List undergoes dramatic changes. Da-dong is assigned to return to class KO One to investigate, where he reunites with the teacher, Tian Xin.

2 - Episode 2

Da-dong and Wan-jun are ambushed as they investigate the reason of the abnormal fighting count. Lei Ting cannot tell how she feels about Wan-jun.

3 - Episode 3

Everyone is shocked when the new class teacher shows up. A letter Lei Ting receives prompts her to confront the past and face the future.

4 - Episode 4

The class is on the verge of conflict as three ill-intentioned mysterious characters transfer into KO One. Someone issued Lei Ting a duel challenge.

5 - Episode 5

Da-dong suddenly intervenes when Lei Ting and Gu Zhan battle against each other. The magical power of Li Yan-yan makes What's-his-name uneasy.

6 - Episode 6

What's-his-name wants to win Li Yan-yan's heart, but things do not go as planned. A puzzled Da-dong has no choice but to seek help from Lei Ting.

7 - Episode 7

Da-dong receives a critical phone call, which is hung up by Yun-han. Soon after, the cellphone suddenly disappears.

8 - Episode 8

Jin Bao-san is heartbroken. Lei Ting and Da-dong accidentally discover an unknown side of What's-his-name.

9 - Episode 9

Everyone in the class receives an invitation. Wan-jun becomes aware of Lei Ting's feelings. An unexpected visitor turns up at Bale High School.

10 - Episode 10

Hua Ling-long tracks down the druggie, and the recording of the drug deal also comes to light. The worst devil in the history of KO One turns up.

11 - Episode 11

Da-dong and Lei Ting become closer, which makes Wan-jun jealous. Zhi Ge's father discovers why he is reluctant to take his girlfriend home.

12 - Episode 12

Wan-jun suddenly professes his love to Lei Ting. Jin Bao-san is hypnotized and attempts to assassinate Da-dong, but ends up injuring himself.

13 - Episode 13

Da-dong adopts the experience of others in order to understand how he feels. Despite the urging of Gu Zhan, Qiu Qiu continues to fall for Wan-jun.

14 - Episode 14

Zhi Ge discovers a talking door. Hei-long secretly sneaks into Bale High school. Gu Zhan accidentally uncovers a certain truth.

15 - Episode 15

Zhi Ge starts to question the real identity of Secretary Li. Zhi Ge's father begins to look into the case, but ends up falling into danger.

16 - Episode 16

Hei-long forces Zhi Ge to open the broadcasting room's door by holding Gu Zhan hostage. Everyone is horrified after the seal is accidentally broken.

17 - Episode 17

Wan-jun shows signs of amnesia, but there is nothing Lei Ting can do. Da-dong is finally back, yet someone barges in just as he is about to help out.

18 - Episode 18

Gu Zhan rushes to the hospital after being notified that his mother is critically ill. A fight ignites the internal strife between the brothers.

19 - Episode 19

There is a remedy for Wan-jun's symptoms, but he will have to pay a great cost. Da-dong refuses to believe that his father has been demonized.

20 - Episode 20

Zhi Ge is taken by a mysterious figure. Gu Zhan strives to save him, yet Hei-long appears at this moment, and he seems to have something planned.

21 - Episode 21

22 - Episode 22

23 - Episode 23

24 - Episode 24

25 - Episode 25

26 - Episode 26

27 - Episode 27

28 - Episode 28

29 - Episode 29

30 - Episode 30

31 - Episode 31

32 - Episode 32

33 - Episode 33

34 - Episode 34

35 - Episode 35

36 - Episode 36

37 - Episode 37

38 - Episode 38

39 - Episode 39

40 - Episode 40