Ha Joon is a South Korean actor. He is is best known for his roles in the TV dramas Black Dog (2019), Arthdal Chronicles (2019), Bad Papa (2018), Radio Romance (2018), Six Flying Dragons (2015), Cheongdamdong Scandal (2014), 3 Days (2014) and Who Are You (2013).
Go Ha-neul becomes a teacher in a private school due to to her gratitude to a teacher who saved her life when she is young. Park Seong is an experienced teacher in the private school who acts as the mentor to Ha-neul. Do Yeon-Woo is a Korean language teacher who is popular with the students.