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.
Casts:
Lim Soo-jung, Lee Do-hyun, Jin Kyung, Woo Da-vi, Jang Hyun-sung, Byeon Jung-su, Choi Dae-hoon, Baek Ji-won, Kim Ho-jin, Jeon Guk-hyang, Oh Hye-won, Lee Kang-ji, Kim Ji-young, Oh Kwang-rok, Han Gi-joong, Choi Seung-hoon, Jang Gwang, Son Jin-hwan, Jeon Jin-gi, Yang Jo-a, Ahn Sang-woo, Choi Woo-sung, Lee Young-eun