Episode 7 of "Weak Hero Class 2" picks up right where the previous episode left off, with the Union Gang hot on the heels of Hyun-tak and Jun-tae. The duo takes refuge beneath a lorry, convincing themselves that the coast is clear. However, their reprieve is short-lived as Seong-mok and Dong-ha track them down. Despite their best efforts to fend off their attackers, the Union Gang members prove to be more adept in the art of combat.
Just as all hope seems lost, Hu-min bursts onto the scene to their rescue. With remarkable ease, Hu-min overpowers Seong-mok and Dong-ha, even after enduring a devastating blow to the head from a motorcycle-riding assailant. Driven by a surge of rage, Hu-min chokeholds Dong-ha, teetering on the brink of taking his life.
Meanwhile, Jun-tae receives a distressing call informing him of Si-eun's accident. Without hesitation, he and Hyun-tak rush to the hospital where Si-eun lies critically ill in the ICU, accompanied by his worried mother. They await news anxiously outside, only to be met with a stern warning from Si-eun's mother to stay away from her son. Elsewhere, the Union Gang retrieves the ledger, only to discover that a crucial page is missing. Baek-jin, the gang's leader, dispatches them to retrieve the lost page at any cost.
The following morning, Hu-min returns home to find his father busily preparing breakfast. Inviting Hu-min to join him, his father mentions the visit from Hu-min's friends and expresses his belief that they are a positive influence. His father's words strike a chord of guilt within Hu-min, who can no longer contain his emotions and bursts into tears.
Elsewhere in the city, Jun-tae decides to take matters into his own hands by bringing the piece of the ledger to the police station. However, he soon realizes that the authorities are unlikely to intervene. As he prepares to leave, he is ambushed by more Union Gang members outside the precinct. They drag him to one of their numerous warehouses, where they mercilessly attack him under Baek-jin's orders.
Baek-jin calls the warehouse and demands to speak with Jun-tae. He mocks Jun-tae's belief that a mere scrap of paper can bring him down, to which Jun-tae retaliates by questioning Baek-jin's anxiety. Baek-jin orders Jun-tae to delete any photos he might have of the page, but Jun-tae stands firm, offering a condition: he will only comply if Baek-jin leaves his friends alone. Baek-jin dismisses his plea, vowing that Jun-tae's fate is sealed regardless. As the Union Gang continues to beat Jun-tae, his resolve remains unbroken, refusing to succumb to their brutality.
Seong-je, nestled in slumber within the inner chamber, is roused by the ensuing uproar. Impressed by Jun-tae's unwavering loyalty to Eunjang High and his comrades, he decides to lend a helping hand. With effortless prowess, Seong-je overpowers the union thugs and promptly summons Hu-min and Hyun-tak to fetch him. As they depart, Seong-je inquiries if Hu-min reigns supreme at Eunjang High, noting that both Jun-tae and Si-eun exude an aura of leadership. Eunjang's peers intrigue and mesmerize Seong-je, sparking both his curiosity and admiration.
CEO Choi arrives at the bowling alley prematurely, his presence a direct consequence of the ledger fiasco. He orders a beating for the union members who dared to disrespect him, reminding them that as their leader, he holds Baek-jin's fate in his hands. A hint of Choi's return spells impending doom for Baek-jin.
The subsequent day, Hu-min brandishes a megaphone at Yeoil High, brazenly issuing a challenge to Baek-jin. He dares Baek-jin to set a date for a showdown, the stakes being Eunjang High's victory would force the Union's dissolution. Hu-min then contacts Hyun-tak, instructing him to spread the word: Eunjang High stands ready to clash with the Union. The students of Eunjang High are simultaneously thrilled and apprehensive.
Later, Hu-min visits Si-eun at the hospital, standing hesitantly outside his door. He apologizes for the turn of events and for Baek-jin's actions. Si-eun's mother appears and kindly invites him in, reassuring him that Si-eun is on the mend. The accident, though not grave, has impacted his nervous system, necessitating rest for full recovery.
In Si-eun's subconscious, he grapples with his past, personified by Beok-seon, who tries to restraint him. Determined, Si-eun resolves to awaken and reunite with his newfound friends and Su-ho. When he finally opens his eyes, his first desire is to see Su-ho, but Hu-min gently holds him back, assuring him that Su-ho is in stable condition, thanks to the nurses who notified his grandmother.
As the episode concludes, Si-eun visits Su-ho, expressing contrition for his tardiness and for forgetting Su-ho's lessons on cherishing friendships and cherishing moments. He vows to replicate Su-ho's kindness towards his new companions. Si-eun then engages with his friends awaiting in the lobby, who attempt to steer the conversation elsewhere. Undeterred, Si-eun insists on discussing their plans concerning Baek-jin.
