The third episode of "Duty After School," titled "It’s Raining Spheres!", thrusts the students of Sungjin High School into the heart of a battle for survival. The once tranquil campus is now a battleground, with alien spheres raining down chaos and fear.
The episode opens with the disconcerting scene of Hee-rak and Tae-man, two students blissfully unaware of the impending doom, indulging in a feast at a convenience store. Their carefree moment is short-lived as they encounter a sphere, initially treating it with curiosity before realizing the grave danger they are in. In a moment of quick thinking, Hee-rak manages to trap the sphere in the freezer, where it begins to perish, offering a glimmer of hope that the alien threat can be defeated.
Meanwhile, the rest of the students are scattered, fighting for their lives against the spheres. The unity among the students is tested as they struggle to protect one another amidst the onslaught. Lieutenant Lee emerges as a beacon of strength, rescuing Bo-Ra and Soon-Yi, while Na-ra, in a display of courage, saves him in return. The group, now assembled under the guidance of Lieutenant Lee and Kim Won-bin, is left shaken, grappling with the horrifying reality that their world has been turned upside down.
As the students regroup at school, they are met with the curious gazes of their peers, unaware of the life-altering events that have transpired. Lieutenant Lee, haunted by the memory of his division's encounter with the spheres, is forced to confront the harsh truth that the military's strategy, using the CSAT exams as a ruse to recruit students, is now in full swing.
The students of Grade 3 Class 2 are on the brink of rebellion. Ha-na's apology to Bo-Ra and Soon-Yi is met with defiance as Park So-Yoon decides she wants to return home. Lieutenant Lee, firm in his resolve, informs them that the school is their safest haven and that their training is crucial for survival. The students, desperate to return to the semblance of normalcy, challenge his authority, leading to a tense standoff.
In a heated vote, the students decide their fate, with Young-Soo standing alone in his desire to remain for the CSAT, facing the wrath of his peers. The emotional turmoil escalates as Kwon Il-Ha's frustration boils over into violence, and Yoo-Jung's slap across the face serves as a stark reminder of the loss they have suffered.
Lieutenant Lee, unyielding, reminds the students that they are soldiers now, bound by the rules of war. The revelation that their homes are gone, their parents likely in shelters, shatters any remaining illusions of safety. The students, led by Yoo-Jung and Young-Shin, confront the harsh reality that they are trapped, their pleas to join their families falling on deaf ears.
As night falls, the students, exhausted and demoralized, continue their training under Lieutenant Lee's watchful eye. Kim Won-bin's reminder that their harsh training is for their own good offers little comfort. Lieutenant Lee, in a moment of solitude, reflects on the military's desperate attempts to find a weapon capable of defeating the spheres, revealing the depleted uranium ammunition as their only hope.
The students, undeterred, devise a plan to escape, choosing Chi-Yeol and a few others to confirm the safety of their parents. Their daring escape attempt is thwarted, leading to a harsh punishment from Lieutenant Lee, who warns them of the dire consequences of desertion.
The news of Yeong-hoon and Teacher Park Eun-young's death spreads like wildfire, galvanizing the student body to take action. Their collective determination to break free reaches a boiling point as they stage a protest, only to be met with the commander's desperate attempt to maintain control.
In the midst of the chaos, the spheres continue their relentless assault, claiming more lives and shattering any hope of a peaceful resolution. The commander's tragic end serves as a stark reminder of the cost of self-preservation in the face of adversity.
As the episode draws to a close, the students, along with the remaining soldiers, prepare for a final stand. Armed and ready, they make a desperate bid for freedom, with Na-ra's unexpected skill as a soldier providing a crucial lifeline.
"The Calamity Unleashed" is a harrowing account of the students' struggle against the alien spheres. It is a tale of courage, loss, and the indomitable will to survive against all odds. The episode captures the transformation of ordinary students into reluctant warriors, forced to confront an enemy beyond their comprehension and a future shrouded in uncertainty.