A mom works as a private consultant for other moms on their children's college entrance exams. Because her daughter attends a prestigious university and her son has been accepted to a prestigious high school as well, she is respected by other moms so much that she charges high consulting fees for providing other moms with study planning on college entrance preparation. One day she, a mom of two children, commits a murder accidentally. Her son Seon-woo finds her mom with blood all over her body. He now steps in to hide his mom's crime.

Shin Eun-jung
as Min Ji Hye

Kwak Dong-yeon
as Ji Seon Woo

Go Bo-gyeol
as Shin Yoo Kyeong

Ban Min-jeong
as Director Gong

Kim Kyu-chul
as Sin Gi Cheol

Choi Jun-yong
as Park Tae Man