The main character, Reimi Shizuka (Hirose Alice), becomes a high school teacher despite not being interested in doing so, in order to escape her NEET lifestyle. She doesn't have much to do with the eccentric teachers and modern students, including the passionate and airheaded Urami (Watanabe Shota), and she has zero motivation. However, as a teacher, she ends up giving a "lecture" that she doesn't want to give! Shizuka gives an outrageous "lecture" to a student who claims that "bullying" is "teasing"! A refreshing school drama begins in this day and age when people can't say what they want to say, be it power harassment, moral harassment, or compliance!

Unmotivated high school teacher Shizuka (Hirose Alice) is now having love trouble in her classroom! After school, Shizuka witnesses a date between two students from her class, Hata Rintaro (Hamura Hitonari) and Ando Yurina (Shida Kohaku). However, Rintaro is dating Oota Riko (Arai Miu) from the same class... Riko is furious that he cheated on her! Meanwhile, Yurina is unconcerned and says, "Is it wrong to fall in love with someone who has a partner?", which leads to a big argument! Furthermore, an affair between two teachers is discovered! Shizuka tries to calm the situation, but ends up inviting the worst possible outcome...

A teacher laying off a student!? Shizuka (Hirose Alice), who has been appointed to the school reform committee, is bewildered when the chairman, Moriguchi (Ito Atsushi), orders her to expel problematic students! For some reason, the name of Miyazawa Keita (Yoshida Haruto), who has excellent grades and a good attitude towards life, is also on the list of candidates for expulsion... When Shizuka finds out the reason, she does her best to stop Miyazawa from expelling, but the situation gets worse and worse... Is it a good thing to quit easily in this day and age? What is the reason behind Shizuka's tears...?

"Reimi Shizuka is a murderer" - slanderous posters about Shizuka (Hirose Alice) are plastered all over the walls of the hallway, causing an uproar in the school! Shizuka is asked for an explanation by teachers and parents, but she has no answers... Meanwhile, Kaito (Mizusawa Rintaro), who tries to protect Shizuka, is in danger of being expelled for allegedly punching Tazawa (Shimamura Ryunosuke), who posted a photo of the poster on social media! Kaito denies the assault, but... Will a person who has failed once be banished from society? How can they be trusted again? Will Shizuka's lecture be successful?

Is the school discriminating against students?! Suspicions of smoking a year ago emerge among 11 second-year students, including students in Shizu's (Hirose Alice) class. The responsibility falls on the shoulders of their teacher at the time, Seira (Okazaki Sae). Of the 11 students, only six are on Moriguchi's (Ito Atsushi) "forced dropout list" and are at risk of expulsion. Seira, who has no confidence or motivation as a teacher, turns a blind eye to the problem, asking, "Is it wrong to run away from difficult things?" Will Shizu be able to protect her students from the school, which is taking discriminatory measures?

Is the school maneuvering behind the scenes to expel a student? A smoking commotion has engulfed the students in Shizu's (Hirose Alice) class! Due to the schemes of Moriguchi (Ito Atsushi), who is pushing for school reform, Hina (Kiyono Asahime) and Mai (Matsumoto Reise) are placed under house arrest, while only Ayaka (Toyoshima Hana), who is on the "forced expulsion list," is expelled...! The students explode with discontent at the unequal treatment! As Moriguchi's maneuvering closes in, Shizu's hidden past also comes to light. Will Shizu be able to respond to the feelings of her students and save them?

A school hostage incident on a Sunday!? With the expulsion commotion settled, Shizuka (Hirose Alice) was supposed to have a peaceful Sunday... but Seira's (Okazaki Sae) ex-boyfriend barricades himself in the school toilets! Oguchi (Noro Kayo) and Shinjo (Kote Shinya) have a major breakup discussion! Nishihata Rui (Hayashi Yuta), a student who came to take supplementary lessons, skips class saying he "doesn't feel like it"... Troubles occur one after another! Shizuka's anger reaches a peak! Meanwhile, Kyoko (Kimura Yoshino) goes to see Aika (Shida Mirai), who holds a grudge against Shizuka... Will Shizuka be able to get her peaceful Sunday back?

Revenge is coming for Shizuka (Hirose Alice)! "I will never forgive Reimi Shizuka" - Aika (Shida Mirai) blames Shizuka for her sister's death and grows increasingly resentful. Meanwhile, Moriguchi (Ito Atsushi), whose position as the next chairman of the school board is in jeopardy, tries to drag the eyesore Kyoko (Kimura Yoshino) down from the principal's chair... Meanwhile, a major incident that threatens Shizuka's teaching career breaks out! Aika appears in Shizuka's classroom and declares in front of the students, "Reimi Shizuka is... a murderer." A direct confrontation between Shizuka and Aika begins! How can she make amends!? Shizuka faces herself and finds her answer...!

A student who doesn't go to school calls Shizuka (Hirose Alice) for help!? Shizuka is consulted by Wakisaka (Hagiwara Mamoru), a student who is undergoing long-term treatment due to poor health, about bullying. Wakisaka refuses to reveal who bullied him and what, and demands that Shizuka find the student who bullied him and make him apologize. However, no one has any idea about Wakisaka's bullying... Shizuka tries to talk to Moriguchi (Ito Atsushi), her homeroom teacher in her first year, but the situation takes an unexpected turn! What is the truth behind the bullying? Wakisaka is a terrible person! And Shizuka and the school are facing their greatest crisis yet!

The school is facing its biggest crisis yet! A student, Wakisaka (Hagiwara Mamoru), tries to frame Shizuka (Hirose Alice) by leaking a "list of students who will be forced to drop out." The teachers, busy dealing with the media, deny the existence of the list, but their lie is exposed, causing an even greater uproar! Furthermore, Wakisaka stirs up anxiety among the students, causing Class 2-10 to fall apart! The school is finally forced to close... What should we believe? Who should we trust? Can Shizuka save the school from the brink of collapse?! The final heart-warming divine sermon begins!