2020
S01E16 finale
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 reveal the corruption in school and to regain one's reputation as a teacher.
Yoon Su starts to smile little by little thanks to Seung Yoo, and the two of them have an enjoyable and memorable time together. Meanwhile, Noh Jung Ah, who is furious at Yoon Su for targeting her, decides to get in the way of Si An, the one student Yoon Su cherishes. Yoon Su notices the provocation and resolves to face her.