In "Angry Mom" Kim Yoo Jung tried to help her friends and was threatened with murder.

On the MBC Wednesday/Thursday mini-series "Angry Mom" (script Kim Ban Di, director Choi Byung Gil) broadcast on Mar. 18, Bok Dong (played by Ji Soo) threatened Ah Ran (played by Kim Yoo Jung).

Before this, Ah Ran was trying to protect her friend Yi Kyung (played by Yoon Ye Joo) and was hurt. Her friend had been a victim of school violence and bullying. After finding this out, Gang Ja (played by Kim Hee Sun) informs the school that her daughter is a victim of bullying. Nonetheless, the teacher says that it might be best if Ah Ran transfers to another school.

Moreover, the director of the school's foundation Jung Woo (played by Kim Tae Hoon) also tries to persuade Ah Ran. Nonetheless, Ah Ran is adamant in trying to help her friend. Jung Woo calls someone mysteriously and a bit later, Bok Dong attacked Ah Ran.

Here, Bok Dong was a classmate of Ah Ran. She put a knife to her neck saying, "I told you to mind your own business and not get into Jin Yi Kyung's affairs. Shouldn't you have come to your senses after being beaten? Listen well. Shut your ears if you don't want to get killed. You don't know anything."