Kim Hee-seon
as Jo Kang Ja
Director: Choi Byeong-gil
When Jo Gang-Ja attended high school, she was notorious for fighting. She gave birth to her daughter A-Ran in her late teens and became more responsible. Her daughter A-Ran is now a high school student, but A-Ran is bullied at school. Jo Gang-Ja decides to go back to high school to protect her daughter. Jo Gang-Ja becomes a high school student again.
Kim Hee-seon
as Jo Kang Ja
Ji Hyun-woo
as Park Noh Ah
Kim You-jung
as Oh Ah Ran
Lim Hyung-jun
as Oh Jin Sang
Koh Soo-hee
as Han Gong Joo
Kim Seul-gi
as Jong Man
Jeon Kuk-hwan
as Park Jin Ho
Kang Moon-Young
as Do Yoon Hee
Yoon Ye-joo
as Jin Yi Kyung
Cha Sun-woo
as Hong Sang Tae
Park Soo-young
as Wang Jung Hee
Seo Ji-hee
as Hwang Min Joo
Choi Ye-seul
as Na Do Hee
Kim Tae-hun
as Do Jung-woo
Oh Yoon-ah
as Joo Ae-yeon
Park Keun-hyong
as Kang Soo-chan
Kim Ji-soo
as Go Bok-dong
Kim Ji-young
as Jo Kang-ja's mother-in-law
Jeong Sin-hye
as Lee Hwang Song