The sixth episode of "Seoul Busters" kicks off with an electrifying encounter as Joong-ryeok confronts the enigmatic informant, only to realize it's a well-laid trap. Jung-hyun's henchmen, dispatched with the intention of administering a lesson, find themselves on the receiving end as Joong-ryeok turns the tables, converting them into his unwitting assistants. Amidst the commotion, a call from Tae-ung abruptly interrupts, and Joong-ryeok exits the scene with Jung-hyun, leaving behind a trail of stunned faces.
Later, delving deeper into the mystery, Joong-ryeok pays a visit to Tae-sung, uncovering a crucial detail: Mr. Yoon had borrowed funds mere days before the devastating fire. Tae-ung speculates that Mr. Yoon's foray into Bitcoin trading had led him down a path of financial ruin. Moved by this revelation, Joong-ryeok sneaks into Mr. Yoon's hospital room, leaving behind a card with a heartfelt note, offering assistance to settle the mounting hospital bills.
Meanwhile, Jung-hwan embarks on a futile quest, traversing toy stores in search of the elusive T-Rex figurine, only to be met with disappointment at every turn. As the day draws to a close, the team gathers over dinner, sharing insights and updates on the case. Over dessert, Joong-ryeok confides in Yu-bin about Mr. Yoon's cryptocurrency misadventure, marking a turning point in his acceptance of the truth.
The following day, Yu-bin delves deeper into the crypto world, seeking guidance from a seasoned expert. Meanwhile, Jung-hwan, undaunted by his earlier setback, secretly orchestrates a cunning exchange with Dong-goo, cunningly obtaining the coveted T-Rex figurine in a deal that also nets him another long-desired toy. Returning to the office with his prize, Jung-hwan cunningly feigns illness to evade scrutiny.
Elsewhere, Tan-sik's premature celebration of cracking the case falls flat, earning him nothing but the scorn of his teammates. However, during a casual conversation with Min-seo about cryptocurrency, Yu-bin stumbles upon a pivotal clue. Mining through additional footage captured on the fateful day of the fire, he uncovers a shocking revelation. His suspicions lead him straight to Tae-sung's gym, where a confrontation with Ji-woong reveals the truth: Yu-bin has deduced that Ji-woong was the arsonist, his knowledge of Hyo-joo's presence within the burning building a dead giveaway. Without hesitation, Yu-bin escorts Ji-woong to the station for rigorous interrogation, the web of deceit finally beginning to unravel.
Initially, Ji-woong remained steadfast in his silence, a wall of resistance erected against all inquiries. However, Min-seo's compassionate approach gradually chipped away at his resolve, like warm sunlight melting winter snow. He unfolded his tale, revealing a sense of profound gratitude towards Mr. Yoon, who had not only nurtured his boxing skills but also cared for his beloved grandmother. Dreams of representing the nation on the boxing stage had ignited within him.
Yet, as days passed, Ji-woong discerned a shroud of sorrow enveloping Mr. Yoon. On the eve of the fateful fire, Mr. Yoon stumbled in, drenched in alcohol, his desperation palpable. He implored Ji-woong to aid him in setting the restaurant ablaze, believing it to be the sole escape from his financial quagmire. Little did they know, Hyo-joo's presence that night would alter everything.
Alarmed by the scene, Hyo-joo threatened to summon the authorities, igniting a frenzied struggle between her and Ji-woong over the phone. In the chaos, a tragic accident unfolded—cooking oil spilled, Hyo-joo slipped, and her head struck the ground with a sickening thud. Ji-woong, racked with doubts, fled the scene, only to be consumed by guilt as the flames engulfed everything. Racing back, he rescued Hyo-joo and summoned help, but the damage was done.
At the hospital, Hyo-joo's memories resurfaced, and she confronted her father with a newfound clarity. As the day drew to a close, Joong-ryeok summoned Mr. Yoon to the gym, his gratitude mingling with disappointment. In a heartfelt yet stern exchange, he reminded the former coach of his own teachings—to do what is right, even in adversity. The confrontation culminated in Yu-bin's arrival, arresting Mr. Yoon, leaving Joong-ryeok reeling with sorrow.
The moment of farewell, as Ji-woong was led away to bid his grandmother a poignant goodbye, etched a deeper scar in Joong-ryeok's heart. As the case concluded, Jung retreated to the comfort of his family, while Min-seo received word of a scheduled visit with her father, leaving one to ponder—was he confined in a prison cell or a senior care facility? Meanwhile, Yu-bin pressed on, unwavering in his duty.
