74 minSeason 1 • Episode 16
LatestAs the College Advisory Group prepares a new arts-science fusion class, Sung Soon has a fight with her husband about their careers. Meanwhile, Yeon Woo receives harsh criticism about a creative class he tried out which puts him in a deeper slump. Time goes by and Ha Neul retakes her Teacher Certification Exams.
In a temporary position at a private high school, a compassionate teacher fights to support her students' dreams while navigating school politics.
Acting
Seo Hyun-jin's trembling restraint will wreck you.
Writing
Makes school bureaucracy genuinely suspenseful. How?
Production
That suffocating fluorescent office lighting is a character.
Seo Hyun-jin
Go Ha-neul
Ra Mi-ran
Park Seong-soon
Ha Jun
Do Yeon-woo
Lee Chang-hoon
Bae Myeong-soo
Lee Yoon-hee
Lee Seung-taek
Kim Hong-pa
Byeon Sung-joo
Ye Su-jeong
Yoon Yeo-hwa
Jo Yeon-hee
Kim Yi-boon
Jung Hae-kyun
Moon Soo-ho
Park Ji-hwan
Song Yeong-tae
Yoo Min-kyu
Ji Hae-won
Heo Tae-hee
Ha Su-hyeon
Woo Mi-hwa
Han Jae-hee
Lee Eun-saem
Jin Yoo-ra
Park Ji-hoon
Ku Jae-hyun
Trivia, insights & behind the scenes
Hagwons (cram schools) and contract teacher exploitation sparked national debate when this aired. The 'black dog' title references Winston Churchill's depression metaphor, reframed for burnt-out educators.
Director Park Ju-yeon insisted on casting actual former teachers in minor roles; their improvised reactions to contract negotiations were so authentic they made the final cut.
KR
