The fourth episode of "Under the Gun" takes us on a poignant journey through
the lives of its central characters, Se Young and Go Gun, as they navigate the
complexities of love, family, and the relentless pursuit of survival.

As the episode begins, we see Se Young and Go Gun walking down a bustling street, their camaraderie a stark contrast to the harsh realities that await them. Go Gun's offer to escort Se Young home is a gesture of care, yet it is Se Young's insistence on accompanying him to his night job that truly defines the depth of her support. Her curiosity about his tireless work ethic leads Go Gun to reveal the heart-wrenching truth about his sister's illness and the financial burden he carries to save her life.
The convenience store, a beacon of normalcy amidst the chaos, becomes a stage for Se Young's kindness as she assists Go Gun with his duties. However, their shared moment is not without its shadows. Tae Ha's watchful eyes observe their growing closeness, his hatred for Go Gun intensifying with each passing moment. The darkness in Tae Ha's gaze foreshadows a brewing storm, one that threatens to engulf Go Gun in further turmoil.
The doctor's news offers a glimmer of hope for Go Gun and his father, a life-saving procedure that comes with a hefty price tag. The emotional weight of this decision is palpable as Go Gun visits his sister, Jun Hee, whose selfless plea not to be a burden only deepens Go Gun's resolve. His solitary tears outside her hospital room are a testament to his love and the crushing guilt he feels for his inability to do more.
Tae Ha's challenge to Go Gun is a clear declaration of war, his twisted wager an attempt to sever the bond between Go Gun and Se Young. Go Gun's refusal to engage is a stand against Tae Ha's manipulation, but it also ignites the fuse of Tae Ha's revenge. The illegal gambling den, a place Go Gun has come to rely on for financial support, is exposed by Tae Ha's treachery, leading to Go Gun's arrest and further entanglement with the law.
Se Young and Ji Chul's timely intervention is a lifeline for Go Gun, but the reprieve is short-lived as he is faced with the prospect of a juvenile court appearance. The looming court date casts a shadow over Go Gun's future, a future that Se Young is determined to save.
Se Young's plea for Go Gun to abandon the dangerous world of illegal gambling and instead use his poker skills for good is met with resistance. Her persistence, however, is unwavering as she presents him with a leaflet about a poker competition, a chance for Go Gun to rewrite his destiny.
The episode culminates in a tense game between father and son, a high-stakes face-off that will determine Go Gun's path. The cards and betting chips laid out on the table are more than just tools for a game; they represent the crossroads of Go Gun's life. His father's proposition is a test of Go Gun's resolve, a choice that will either lead him towards the light of redemption or plunge him further into darkness.
"Under the Gun" continues to captivate with its raw portrayal of the human spirit in the face of adversity. The fourth episode is a masterful exploration of the ties that bind us, the choices that define us, and the love that gives us the strength to fight for a better tomorrow.