Episode 3 of "Weak Hero Class 2" kicks off with Hu-min, alias Baku, reinforcing his strict rule to the bullies: while donning the Eujang High uniform, violence is strictly prohibited. With a firm stance, he dismisses the bullies from the scene. Later, Hyun-tak seeks forgiveness from Si-eun, mistaking his intentions earlier. Si-eun, however, silently walks away, prompting Jun-tae to chase after him in an attempt to console him about the damaging rumors swirling around. Si-eun solemnly informs Jun-tae that the students' allegations are far from mere rumors; they are the very reason he refrains from engaging in fights with his peers.
Upon his return from suspension the following day, Hu-min enthusiastically greets his fellow students as he heads to class, radiating positivity. Inside the classroom, a grave conversation ensues between Hu-min and Hyun-tak regarding a proposed practice match against Ganghak High. Hyun-tak harbors concerns about the wellbeing of their team members, knowing that Ganghak plays basketball infused with mixed martial arts tactics.
Suddenly, Hyun-tak, Hu-min, Jun-tae, and Si-eun are summoned to the office, where they are accused of attacking every member of Hyo-man's gang due to their unexpected absence from school. Hu-min's cluelessness shines through as he inadvertently uses the term "false acquisition" instead of "accusation" when addressing the teacher. As punishment, they are assigned to volunteer work over the weekend. Hyun-tak tries to argue that Hyo-man's group should also face repercussions for initiating the conflict, but the teacher remains unmoved by their pleas.
Elsewhere, Jun-tae fills Si-eun in on the existence of a union, a coalition of bullies from neighboring schools, including Yeoil High, Ganghak High, Yeosung High, and others, who have banded together to conduct illicit activities. Revealing that Hyo-man aspired to join this union, he embarked on a mission to collect phones to present to the union leaders as a gesture of loyalty.
However, Hu-min intervened, shielding the Eujang High students from escalating violence. The union's gang members, enraged, embarked on a rampage, targeting any student clad in Eujang's uniform, stealing their money, and leaving them wary. Hu-min's fury ignited, and he single-handedly dispatched every member of the union who dared cross his path. Jun-tae attested that Hu-min was unmatched, leaving no one in the union standing.
The union leaders, seeking scapegoats for their failure to secure Eujang High's territory, orchestrated a gang-up on Hyo-jin. Dragged forcibly, Hyo-man was confronted by the union leader, Baek-jin. Despite Hyo-man's plea for additional time to rectify the situation, Dong-ha remained unconvinced, believing Hu-min's presence rendered their efforts futile. Seong-je, eavesdropping on the conversation, listened intently as Baek-jin suggested a confrontation with Hu-min was imminent.
Over the weekend, Si-eun forged bonds with Hu-min, Hyun-tak, and Jun-tae during a volunteering stint. Hu-min's quirky behaviors and the relentless banter with Hyun-tak amused Si-eun. During lunch, their playful argument inadvertently led to a sauce spill on Si-eun's hoodie. Seeking solace in the washroom, Si-eun encountered Seong-je waiting menacingly outside.
Seong-je snapped a picture of Si-eun, his mounting anger as Si-eun defiantly maintained eye contact. When Seong-je lunged at Si-eun, the latter agilely evaded his punches. Realizing Si-eun's proximity to a flowerpot, Seong-je retreated, giving in. Emerging from the washroom, Seong-je bumped into Hu-min, jesting that a truce between Hu-min and Baek-jin would spare him their "romantic spat."
Delving deeper into Baek-jin's background, he was Yeoil High's ace student, honored with an academic award at a school assembly. Amidst self-study sessions plagued by math problems, mysterious deposits kept flooding his bank account. A subsequent call from Seong-mok confirmed the funds' deposit, also relaying Hyo-man's request for a meeting.
Baek-jin headed to the designated spot, unaware that Hyo-man and his cronies awaited, ready to ambush him. Mocking Baek-jin's scholarly prowess, they underestimated his combat skills, wondering how a model student could lead a gang. Baek-jin swiftly disabused them of this notion, decimating the bullies with a display of unparalleled prowess.
After their volunteering stint, Hyun-tak and Jun-tae escorted Hu-min to his father's restaurant for a scrumptious feast of chicken. Meanwhile, Si-eun paid a visit to his friend Su-ho, who was recuperating in the hospital. Hu-min, concerned for Si-eun's safety given Seung-je's potential for trouble, phoned him to inquire if he had arrived home unscathed. Reassured, Si-eun confirmed his safe return.
While updating Su-ho through a heartfelt message, as was his custom on each visit, an unwelcome visitor loomed outside Su-ho's hospital room. Seung-je's arrival sent a surge of anger through Si-eun, especially when the latter casually mentioned how Si-eun had allegedly caused Su-ho's coma. With a chilling nonchalance, Seung-je beckoned Si-eun to step outside, hinting at his preference for bullying the likes of Si-eun. Respectful of Su-ho's need for rest, Seung-je emphasized the importance of not disturbing the patient's slumber.
