Black Dog: Being a Teacher

Go Ha-neul, an inexperienced contract teacher, begins her first day at Daechi High, a prestigious school in Gangnam. But rumors that she's a nepotism hire spread from day one, throwing the teachers' lounge into turmoil.

Ha-neul is paired with the school's most notorious teacher. As one bizarre incident after another unfolds, someone quietly watches her from the shadows. Can anyone help her survive this crisis?

With Yeon-woo's help, Ha-neul tries to improve her relationship with her teaching partner, but things only grow more complicated. Meanwhile, Su-ho begins hunting the anonymous poster behind accusations of hiring corruption.

Ha-neul's mistakes keep piling up, and even her after-school program is rejected. As she questions her place at school, Seong-soon suddenly assigns her a special mission.

The college counseling team goes on an unusual recruiting trip to gather admissions information. Meanwhile, Ha-neul senses something is wrong, and a mistake in last year's physics final throws the school into chaos.

While searching for a clue left by an admissions officer, Ha-neul finds an unexpected breakthrough. As the counseling team moves to reform the system, an unforeseen incident strikes during midterm exams.

During midterm exam writing, Ha-neul discovers biased questions favoring Icarus students. She tries to warn Hae-won, but everything goes awry. Meanwhile, Yu-ra finds a secret exam guide in Jae-hyun's bookshelf.

After midterms, students challenge the Korean essay grading. Although the teachers reach a decision, Ha-neul remains unconvinced and secretly joins forces with Yeon-woo and Hae-won.

A Korea University admissions officer visits Daechi High but leaves only cryptic answers. Meanwhile, the senior faculty approach Ha-neul with an unexpected proposal before the admissions briefing.

As student records season begins, Ha-neul is touched by her students' kindness-until Myung-soo tells her something she never expected, leaving her stunned.

As Daechi High announces its permanent teaching positions, Hae-won discovers who the real nepotism hire is. Meanwhile, competition intensifies over the school's Korea University recommendation slots.

The Korea University medical school admissions results are out. As attention turns to the permanent teacher exam, Su-ho secretly arranges a meeting with someone.

At a noodle shop, Ha-neul meets the driver responsible for Young-sook's accident and learns he is now a Daechi High senior. Meanwhile, Seong-soon must decide whether to accept a promotion.

As Daechi High expands its Icarus program, the students make a surprising proposal that throws the school into turmoil. Ha-neul also reunites with Bo-tong and uncovers an unexpected link to Seong-soon.

Bo-tong begins a leave before deciding whether to drop out, while teachers react to performance bonus results. As resentment over favoritism toward Icarus grows, divisions begin to fracture Daechi High.

With Park Seong-soon gone, Ha-neul struggles to keep the college counseling office running as new challenges await.