| Duration: | 4320 min |
|---|
A sexual scandal between a math teacher and a student in a prestigious high school ended in tragedy. 4 years later they meet again, now as adults, to …
Ji Yoon-soo, math teacher, set to marry, assigned to prestigious Asung High School in Gangnam.
Yoon-Soo realizes that Seung-Yu is the one who guessed the math club's Calculus question.
When Yerin learns that Seung-yu used to be a math prodigy, she feels uneasy.
Seung-Yu and Yerin start preparing for the Math Olympics in earnest.
Seung-Yu opens up to Yoon-Soo about a past trauma she hasn't been able to tell anyone about.
Yoon-soo has mixed feelings about Seung-yoo's confession.
