The seventh episode of "Unmasked" kicks off with a bombshell confession from Han Do, revealing him as the enigmatic Dr. Trigger. With a grave tone, he divulges his discovery of an affair and his intent to expose it. However, the narrative takes a turn when an unidentified individual gains access to the account and posts a compromising photograph of So-ryong. Stunned and fuming, So-ryong strikes Han Do, but the magnitude of the revelation is too much for her to process, prompting her to postpone further discussion until later.
The scene then transitions to a female shaman immersed in a ritual. In the midst of her chanting, she experiences a vision of flames engulfing something unseen, causing her to collapse abruptly and accidentally stab herself in the leg with a ritual knife.
Meanwhile, So-ryong persists in her investigation of Choi Ho-seong, only to be met with police assurances that there is no evidence of his departure from the hospital. Back at the office, Han Do repeatedly rejects the story pitches offered by Ji-yun, one of the writers. Intriguingly, he learns that a shaman has been inboxing their office incessantly after witnessing the Trigger logo in a visionary state.
Elsewhere, Ji-yun and the rest of the writing team, including Mo-ka, Gi-ho's girlfriend, voice their grievances about his newfound bossiness and unbearable demeanor since ascending to the producer's role.
Just as tensions are escalating, So-ryong receives an unexpected call from Choi Ho-seong himself. From within the hospital walls, he expresses a desire to bestow her with something. She and Gi-ho hastily visit him. Upon entering, Ho-seong inches closer to So-ryong, sniffing her curiously before handing her a crumpled piece of paper. It reveals an official diagnosis of dual personality disorder and delirium.
Ho-seong protests his innocence regarding the stalking incidents. However, the moment a doctor enters to announce the end of visiting hours, Ho-seong's demeanor abruptly shifts. He begins to growl menacingly and lunges at the doctor, sinking his teeth into the latter's ear. The journalists track down the physician who authorized Ho-seong's paperwork, cornering him and confronting him head-on. noting the substantial donation the facility received from Ho-seong's father. However, the doctor stonewalled them, refused to talk and hurriedly fled the scene.
The Trigger team subsequently launches an appeal for information pertaining to the tire-slashing incident. So-ryong then takes Han Do on an off-site training exercise, boarding a boat where she confronts him about his true identity as Dr. Trigger. Han Do confesses, asserting that his revelation stems from a debt of honesty owed to her. He also unveils his arrangement with President Koo, while So-ryong shares her race against Koo to uncover Dr. Trigger's identity. She exacts a solemn promise from him to keep his identity concealed, vowing that she alone will reveal it at the appropriate time.
Later, they confront Choi Ho-seong's father, presenting all the information at their disposal. The man remains tight-lipped, though he vows not to allow any more innocent lives to be jeopardized.
Elsewhere, Ga-yeon concludes her school duties and meets with Na-hee. She reveals to Na-hee that she has instructed her fiancé to maintain some distance between them for the time being. Ga-yeon expresses guilt over abandoning her child years ago, to which Na-hee responds by suggesting that child could have been someone's miracle. Could it be that Na-hee adopted Ga-yeon's abandoned child?
Back at the office, a tipster contacts Gi-ho through the designated line, confessing to being the perpetrator behind Ga-yeon's tire slashing. He arranges a meeting with Gi-ho and So-ryong, recounting how he was hired by an anonymous individual to slash the tires and retrieve Ga-yeon's ring. The handover took place in a bathroom stall, with the employer's face never coming into view.Later that night, So-ryong receives yet another urgent call from Ho-seong, who reveals in hushed tones about having a secret admirer, a die-hard fan, closely affiliated with Ga-yeon. Before she can even utter a word of inquiry, he abruptly ends the call. This incident fuels So-ryong's suspicions towards Ga-yeon's fiancé, Lee Mu-o. She ponders deeply how he could possibly have known that Ga-yeon was holed up at the KNS office on the night he arrived with flowers, a detail she herself had kept undisclosed.
Na-hee, stepping in to clarify, affirms that Ga-yeon had confided in no one about her whereabouts. She then endeavors to persuade So-ryong not to broadcast this distressing episode. With a heavy heart, Na-hee finally unburdens herself, spilling the long-kept secret. Years ago, Ho-seong had violated Ga-yeon, leading to an unintended pregnancy that Ga-yeon discovered far too late. The resultant child grew up in an orphanage, unaware of her true origins, while Na-hee, driven by compassion, regularly visited her. Eventually, Na-hee adopted the little girl, keeping Ga-yeon in the dark about her existence all these years.
Now, Na-hee is consumed with anxiety. She fears that if the episode is aired, her beloved daughter could be propelled into harm's way. In stark contrast, So-ryong argues passionately that it is precisely for such reasons that the episode must see the light of day, to ensure that such heinous incidents are never repeated.The following day, So-ryong arranges a meeting with Mr. Lee, inquiring into the source of his knowledge regarding Ga-yeon's whereabouts at the KNS office. Just then, her phone rings — it's the perpetrator who sabotaged her car's tires. The narrative abruptly transitions to the Trigger office, where the team huddles to strategize their next steps. So-ryong consults with a physician who emphasizes that Ho-seong's diagnosis necessitates substantial proof and the involvement of numerous experts. The authenticated document in question harbors a tangible air of suspicion.
Afterward, So-ryong ventures to the hospital to confront Ho-seong. She adorns herself and carries a bouquet of flowers, feigning a visit from Ga-yeon's wedding festivities with Mu-o. Ho-seong becomes agitated, inadvertently disclosing that Mu-o is the admirer he had previously alluded to. He even produces Ga-yeon's ring as tangible evidence. As So-ryong snatches it from him, Ho-seong's demeanor undergoes a sudden metamorphosis, softening into a yearning to return the ring to Ga-yeon. Seizing this moment, So-ryong exposes Ho-seong's feigned identity, citing the doctor's revelation that the distinct personalities do not share memories. Enraged, Ho-seong lunges at So-ryong before being restrained by hospital staff.
A fleeting flashback revisits the phone conversation where the tire slasher revealed that their employer possessed small feet, approximately a size six. The realization dawns on So-ryong: Lee Mu-o is not the culprit. Mu-o then informs her that it was Ga-yeon's colleague, Kim Bo-min, who disclosed Ga-yeon's location. The true perpetrator stands revealed — Bo-min! A devoted admirer of Ho-seong, she became a fervent fan after learning of his deeds. She was the one stalking Ga-yeon on his behalf. We subsequently witness Ga-yeon confronting Bo-min at work, culminating in her arrest by the police. As So-ryong watches Bo-min being led away, Ga-yeon urges her to broadcast the episode with integrity and honor.
