Sung Soo-ji (played by Kim Ji-yeon) finally understood why she was always frightened in front of Baek Ha-rin (played by Jang Da-ah) - it was because of "fear".At present, she is facing the situation of being threatened by Bai Xialin and has to delete the recording evidence she has accumulated.At the same time, the Happy Class was conducting off-campus teaching, but the atmosphere became quite awkward because of a dodgeball game.At this time, some students were eager to know if Sung Soo-ji had a way to destroy the Pyramid Game, and even considered joining in. However, Sung Soo-ji was at a loss as she did not know how to face those students who wanted her to lead, and they did not dare to reveal it to her D-class alliance partners.He was threatened by Bai Xialin.Bai Xialin arrogantly mocked Cheng Xiuzhi and asked her if she regretted not transferring schools earlier.Everything she did was aimed at making everyone "fall apart"! Yelin was overjoyed when she found out that she was on the list. However, she discovered that Shen Eunzhen planned to give up the swimming competition. The reason was actually because Baek Charin asked Shen Eunzhen to teach her on the competition day.swim.Yelin knew that this was deliberately arranged by Bai Xialin, and used this to threaten Shen Enzhen to achieve her goal of debuting.As for Song Zaixin, Bai Xialin learned that Song Zaixin's brother was about to interview the consultant lawyer of the Bailian Group, so she threatened Song Zaixin with the bad habit of secretly filming boys.During the diving experience, Baek Charin suddenly fell into the pool. Myung Ja-en (played by Yoo Da-bin) and Shim Eun-jung immediately came to help. However, Baek Charin claimed that she accidentally stepped on the air.In contrast, Bai Xialin was even more angry at other people's indifference and indifference.Duya witnessed Fang Yuyi (played by He Luli) push Bai Xialin down. Fang Yuyi nervously explained that it was just a mistake and not intentional.In fact, everyone showed a cold attitude, even Duya was no exception.Seo Do-ah (Shin Seul-gi)'s father believes that the bad influence of this game has gradually spread beyond the classroom. He suggested that Baek Charin's father start paying attention to the seriousness of the matter.So Bai XiaLin's father planned to persuade his wife to let Bai XiaLin study abroad, but was reprimanded by President Bai.The accommodation arrangement at night caused some people to be left alone. Sung Suzy and his party were arranged to live with Zhao Youlin, who had betrayed Ming Zien before.Zhao Youlin explained to Song Zaixin that she was also a victim, saying that in that situation, most people would become victims.Ming Zien showed his kindness and tolerance and said he would not hold grudges.Baek Charin began to manipulate the people around Cheng Xiuzhi to betray her, and used Gao Yinxing (Ding Hadam) as a helper.Later in the evening, the friends celebrated Sung Suzy's birthday. Zhao Youli secretly saw this scene and felt envious.Zhao Shenghe blamed himself for not discovering his sister's distress signal earlier.In fact, Sung Suzy did not actually delete the recording evidence. She understood the "fear" that Zhao Shenghe said, so she had a different plan.Yin Ruiyuan specially thanked Sung Suzy for helping her in the dodgeball game. She hoped that Sung Suzy knew that not everyone is like Baek Charin.With the support of her partners, Sung Suzy feels very encouraged.Bai Xialin found Ming Zien's mother, implying some kind of threat.In order to protect his friends, Ming Zien had to face Bai Xialin's provocation.In the hunting competition, the level battle between individuals began again, and Sung Suzy and her party became Baek Charin's main target.In the final rating, Ming Zien and others became the targets of punishment.Bai Xialin insisted on selecting an F-level person and stirred up everyone's emotions, making them believe that only by selecting an F-level person can safety be ensured.In this tense atmosphere, Piao Zhiai suddenly opened fire, but her target was herself, blaming herself for her past betrayal.At this time, everyone realized Bai Xialin's differentiation strategy and decided to unite to fight against her.Sung Suzy, along with the others, took up guns and fired on themselves to show that they would not betray each other.