The inaugural episode of "When the Phone Rings" sets the stage for a gripping narrative that delves into the complex dynamics of power, deception, and the facades we construct to maintain appearances. The episode, titled "The Kidnapping," introduces us to Baek Sa-eon, a charismatic presidential spokesperson, and his wife, Hong Hee-joo, a news interpreter with a secret.
The episode opens with a grand entrance by Sa-eon at an international gathering, where his presence commands attention. However, the atmosphere shifts when Hee-joo joins him. Sa-eon's firm yet calm instruction to Hee-joo to remain composed and not draw attention to herself as his wife reveals the distant nature of their relationship.
Hee-joo's professional life takes a hit when a technical glitch during a news broadcast captures her mid-gesture in an offensive sign, leading to embarrassment and humiliation. Meanwhile, the newsroom receives breaking news of a hostage situation involving Korean citizens. Sa-eon, as the presidential spokesperson, addresses the nation with calm and charisma, while Hee-joo seethes with anger, flipping him off on the screen before walking away.
Back at the presidential office, Sa-eon navigates the media frenzy with skill, urging the press to withhold sensitive information. His composed exterior hints at his ability to maintain control, but cracks begin to show as the calls persist. Hee-joo, on the other hand, faces her own battles at home, with her controlling mother-in-law demanding she quit her job and embrace her role as the future First Lady.
The day takes a terrifying turn for Hee-joo when her car's system is hacked, throwing her into a panic. At the same time, Sa-eon begins receiving calls from a mysterious number, which he initially brushes off. However, when the kidnapper infiltrates Hee-joo's car and calls Sa-eon directly, the gravity of the situation becomes clear. The kidnapper threatens to kill Hee-joo, but Sa-eon, assuming it's a prank, coldly tells him to go ahead and cuts the call.
Hee-joo, devastated by her husband's indifference, is left to fend for herself. In a desperate attempt to escape, she speeds her car into a collision, knocking the kidnapper unconscious. Shaken but determined, Hee-joo escapes, taking the kidnapper's phone with her. Sa-eon begins to worry, realizing his wife might genuinely be in danger. However, upon seeing her return home safely, appearing composed after a shower, he relaxes. Unbeknownst to him, Hee-joo is hiding the truth about her harrowing experience, masking her disgust for the man she married.
The next day, Sa-eon takes Hee-joo to another international gathering, instructing her to act solely as an interpreter, reinforcing their transactional relationship. During the event, Sa-eon casually mentions how his wife is his "greatest weakness," enraging Hee-joo, who remains professional.
Later, when the two are alone, Hee-joo confronts Sa-eon in sign language, accusing him of being ruthless and heartless. She insinuates he must have another woman in mind, someone he truly considers a weakness. Frustrated and emotional, she storms off to the restroom, tears streaming down her face.
Sa-eon receives another call from the kidnapper's number. This time, the caller taunts him with unnervingly accurate details about his private life. A flashback reveals the origins of Sa-eon and Hee-joo's marriage—a contract forged out of convenience, with Sa-eon demanding complete privacy and forbidding Hee-joo from revealing herself as his wife in public.
As the call continues, Sa-eon's calm exterior cracks. The caller's knowledge of his life leaves him rattled. What he doesn't realize is that the voice on the other end belongs to Hee-joo herself, who is using the kidnapper's phone to pose as him. Her anger fuels her deception as she threatens Sa-eon, demanding he "leave his wife"—unknowingly referring to herself.
Sa-eon, unaware of the true identity of the caller, grows increasingly enraged. He vows to hunt down the kidnapper and ends the call. Hee-joo, realizing her ruse has worked, begins to panic. Though Sa-eon believes he's dealing with a dangerous stranger, Hee-joo knows she's walking a fine line between revenge and maintaining her fragile facade.
The tension between the couple deepens as their secrets and betrayals intertwine, setting the stage for a thrilling unraveling of their complex relationship. The episode ends on a high note, leaving viewers eager for the next installment in this intricate tale of power, deception, and the lengths people will go to protect their secrets.