Seung Yoo’s Project
Now that he has reunited with Yoon Su, Seung Yoo tries to get close to her again. Noh Jung Ah, who doesn't know that Yoon Su has become an elite instructor at an academy, asks the academy for the guidance of her daughter, Ji Na. Meanwhile, Sung Jae appears in front of Seung Yoo and Yoon Su, who are together.
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More from this season
S1 E1
Fermat’s Last Theorem
At Asung High, Yoon Su’s new workplace, she gives a tricky question for students who want to join the math club. While no one in the class got the question right, a correct answer sheet is posted on the board outside the classroom. To find out who did it, Yoon Su provokes them and manages to find who it is.
S1 E2
Baek Min Jae
Yoon Su finds out that Seung Yoo solved the question. But he tries to keep a distance from her, saying he doesn’t like math. Yoon Su gives him another math problem, and the problem allows them to connect and communicate. Meanwhile, a math competition is held at Asung High to select the rep student to participate in the International Mathematics Olympics.
S1 E3
Infinite and Finite
Seung Yoo participates in the math competition and is picked to represent Asung High along with Ye Rin. The result shocks everyone who thought Seung Yoo had no talent in math except for Ye Rin who knows that Seung Yoo is a math genius. Meanwhile, the parents of other students and Ms. Noh aren’t happy with how Yoon Su runs her math class and club.
S1 E4
The Ten-Year-Old Genius
Seung Yoo and Ye Rin prepare in earnest for the Math Olympics. Jung Ah and Min Jun teach Ye Rin the means to win, and Yoon Su finds out about the corruption in the competition. However, Yoon Su goes to Jeju Island with Seung Yoo to help him with the contest. On the same day, Ye Rin arrives at Jeju Island for internship activities for the competition.