Facing a critical juncture in her career, Na Je-hui strategically appeals to Koo Kyung-yi’s particular talents and vulnerabilities, seeking her assistance with a perplexing missing person’s investigation.

Kyung-yi felt a disquieting sense that the accident held hidden depths. While reconnecting with a former schoolmate, Song Yi-kyung, she learned of a tragedy that had befallen a once-respected teacher.

The news report detailing a lenient sentence for a criminal served as a signal, pinpointing a new mark for "K." He positioned himself on the vibrant grounds of a university, the familiar energy of the campus now his hunting ground.

The pursuit of "K" throws the team into a state of heightened vigilance, none more so than Kyung-yi. Meanwhile, a nervous accomplice begins to break away from the criminal's influence.

A shadow of a past trauma flickers in Jung Jeong-yeon’s mind as she recalls the events of her niece’s childhood. Driven by a feeling that “K” might be planning to flee, Kyung-yi’s team lays a carefully constructed plan to intercept him.

Kyung-yi meticulously examined Yi-kyung’s notebooks, searching for the next mark. The narrative of a pariah led the team to an IT firm overseen by a prominent figure.

Kyung-yi navigates a perilous game of pursuit, striving to uncover and thwart the lethal schemes Yi-kyung has devised for Ko Dam’s upcoming public appearance.

The loss of Yi-kyung cast her into a realm of unsettling shadows. Driven by a shared need for understanding, both Yi-kyung and Kyung-yi sought to unravel the mystery surrounding the event's unforeseen consequences.

Yi-kyung and Yong-suk aligned their efforts, stepping in to supplant the disheartened Kyung-yi, who had fallen out of favor with the director's assertive leadership.

Kyung-yi drew nearer to the heart of the matter concerning the boat party, each step a deliberate advance toward understanding. Meanwhile, Yi-kyung fought to break free from the tightening hold Yong-suk exerted, desperate for a moment's res…

Following the unauthorized release of a video from the yacht party, Yong-suk desperately seeks Kyung-yi’s assistance. Meanwhile, Yi-kyung discreetly approaches a member of Kyung-yi’s inner circle, initiating a clandestine partnership.

Yi-kyung has taken Santa captive, revealing his true nature to a stunned Kyung-yi. Meanwhile, Yong-suk’s carefully laid schemes unravel with disastrous consequences.