Mystery · Drama

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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.