Episode 9 of "Perfect Family" kicks off with a dramatic revelation from Hyun-min to Sun-hui, unraveling the twisted tale of how Jin-hyeok and Eun-joo adopted her as a pawn to shield their son's murderer. Meanwhile, Jin-hyeok and Eun-joo spin a starkly contrasting narrative to Dong-ho, painting Hyun-min as the true culprit behind Sang-woo's murder and their son's demise a dozen years prior.
Jin-hyeok accuses Hyun-min, freshly released from prison, of attempting to blackmail them, exploiting Sun-hui's adoption as leverage. Eun-joo chimes in, detailing Hyun-min's sinister plot to abduct Sun-hui in pursuit of even greater financial gain. They claim Hyun-min sought to silence the truth about his paternity over Sun-hui's head, demanding a hefty ransom.
Eun-joo's voice trembles as she recounts the fateful night when Sun-hui, unknowingly, took Kyeong-ho's life. Fleeing the scene with Sun-hui's belongings, Eun-joo was confronted by Kyeong-ho's parents' unexpected return. The thought of Sun-hui's arrest stayed her hand from dialing 911. Hyun-min, sensing an opportunity, emerged the day after, offering to sanitize the crime in exchange for cash—a deal that Eun-joo reluctantly considered.
But the story deepens when Eun-joo discloses Hyun-min's extension of his services to silence Soo-yeon, Sun-hui's accomplice. Jin-hyeok helplessly watched as Hyun-min borrowed his car, chasing after Soo-yeon, leaving Jin-hyeok with no choice but to comply, driven by his desire to save Sun-hui.
Desperate to shield Sun-hui, Jin-hyeok agreed to Hyun-min's terms, even contemplating sending Sun-hui to Canada to escape the web of deceit. Eun-joo, aware of Hyun-min's peanut allergy, hatched a plan to poison him, ensuring his silence forever. Now, with the weight of their secrets becoming unbearable, they plead with Dong-ho for assistance.
As Hyun-min's patience wears thin in the desolate building where he holds Sun-hui captive, his desperation echoes through the phone lines as he warns Jin-hyeok against deceit. Outside, the police stand vigilant, their presence a testament to the unraveling of this intricate web of lies.
The police cunningly ensnare Hyun-min's companion, yet they claim ignorance of the remaining abductors' numbers, thus hesitating to terminate Hyun-min's life. Jin-hyeok, brave and resolute, volunteers to venture into the desolate edifice to rescue Sun-hui. Within its forsaken walls, Sun-hui confides in Hyun-min, declaring her unwavering trust in those who have embraced her as family.
Jin-hyeok arrives, cash in hand, beseeching Hyun-min to release Sun-hui. However, Hyun-min, consumed by vengeance, trains his gun on Sun-hui's head, threatening to spill her blood as retribution against Jin-hyeok. On the cusp of executing his grim plan, police intervention strikes, wounding Hyun-min as he pulls the trigger. Sun-hui rushes towards Jin-hyeok but halts midstride, torn between her father's figure and the fallen Hyun-min. Hyun-min, regaining his grip on Sun-hui, drags her to safety amidst the chaos.
Sun-hui, steadfast in her loyalty, refuses to abandon Hyun-min's side, frantically attempting to stem the flow of his life's essence. Hyun-min, stunned by Sun-hui's selflessness, is transported back to cherished memories of their innocent past. As he grapples with the turn of events, Jin-hyeok lunges, striving to disarm him. The air shatters with more gunfire, stunning Eun-joo and the police alike. In a desperate struggle, both men plummet from the building's precipice, disappearing into the depths of the ocean.
The police swiftly intervene, rescuing Sun-hui as she weeps for her father, nestled in Eun-joo's comforting embrace. A tender flashback illuminates Sun-hui's childhood, where Hyun-min tenderly escorts her to his mother's abode, entrusting her care to the elderly woman while he promises a swift return.
Yet, Hyun-min's gambling addiction proves his downfall, draining him of every penny. His reckless attack on a drunken man, an attempted robbery gone awry, lands him in jail. There, he encounters Prosecutor Choi Hyun-min—a stunning revelation, for he is none other than Jin-hyeok. Desperate for understanding, Hyun-min appeals to Jin-hyeok's empathy, hoping their shared names might forge a bond amidst their adversities.
Jin-hyeok, moved by compassion for Hyun-min's plight, reluctantly abandons the case, citing an insurmountable lack of evidence against him. However, Hyun-min, instead of gratitude, chooses to exploit Jin-hyeok's mercy, striking back in the dead of night. With a brutal blow, he incapacitates Jin-hyeok and steals from him, leaving a bitter taste of betrayal in the air.
Later, in a poignant epilogue, Dong-ho trudges home, his face illuminated by the glow of a video call with his beloved son. The conversation turns tender as his son inquires after Princess, the family cat that holds a special place in their hearts. Yet, the warmth is fleeting as Dong-ho's ex-wife's voice cuts through the night, her words laden with finality. She implores Dong-ho to sever all contact, emphasizing their need to move forward with their separate lives, leaving the viewer with a sense of melancholy as the episode draws to a close.
