The new 16-episode series follows a young job-seeker named Lee Mi-jin, played by Jung Eun-ji. She spent 8 years trying to pass the civil service exam and only got part-time jobs. However, an incident causes her to age into a 50-year-old named Im Sun in the day and rejuvenate back into her 20s in the night.
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Director
Lee Hyung-min
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Writer
Park Ji-ha
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Cast
Lee Jung-eun, Jung Eun-ji, Choi Jin-hyuk, Baek Seo-hoo
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How Many Episodes Does Miss Night and Day Have?
16
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Native Title
낮과 밤이 다른 그녀
Lee Hyung-min is a series director known for popular works such as Winter Sonata, I’m Sorry, I Love You, Chocolate, Strong Woman Do Bong Soon and others. Good Casting fame Park Ji-han screenwrites for the drama as well.
– Spoilers Ahead –
Miss Night and Day Episode 15 Recap
Mi-Jin finds herself in danger after confronting Na Ok-hui, who has been using a fake identity. Meanwhile, Ga-yeong finishes her skin treatment and realizes she’s missed twelve calls from Mi-jin. The last message from Mi-jin instructs Ga-yeong to call the police if she can’t be reached. Instead, Ga-yeong contacts Ji-ung, knowing he can act quickly and cares deeply for Mi-jin.
As Ok-hui chases Mi-jin through the forest, she experiences a breakdown, haunted by guilt over Lim Sun’s murder. Ok-hui hallucinates that Mi-jin is the real Lim Sun. Despite being injured, Mi-jin manages to sedate Ok-hui using fentanyl—the same drug Ok-hui used on her victims—knocking her out.

Ji-ung arrives but initially cannot find Mi-jin, only locating her father’s mobile phone. Searching for clues, Ji-ung encounters the orange cat that started the whole ordeal. Recalling Mi-jin’s belief that cats repay kindness, he follows it. By morning, the cat leads Ji-ung to Mi-jin, who is unconscious.
Ji-ung cradles Mi-jin in disbelief and informs everyone of the situation. As a result, bodies are unearthed, confirming Ji-ung’s suspicions. Two bodies are discovered: Ji-ung’s mother and the real Lim Sun. Ji-ung breaks down, mourning the lost opportunity to reunite with his mother. Mi-jin and her father are taken to the hospital. Mi-jin, still in Lim Sun’s form, can only watch her father from a distance. Her transformation lasts longer than usual, suggesting a lingering task related to her aunt.
It’s revealed that Ok-hui murdered Lim Sun after Lim Sun caught her stealing money and impersonating others. Lim Sun had tried to alert Baek Chul-kyu, but he silenced her. Ji-ung’s mother witnessed Ok-hui with Lim Sun’s body and later worked alongside Ok-hui, who sought to ensure her silence. Eventually, Ji-ung’s mother attempted to do the right thing, leading to her murder. Before dying, she begged for her life for Ji-ung’s sake. Ok-hui recounts this to Ji-ung, trying to provoke him, but he remains stoic.

Ji-ung speaks with a detective intern, expressing no blame and acknowledging the detective’s efforts. He also tells the lead detective with dementia about finding the child’s mother, bringing bittersweet closure. Meanwhile, Mi-jin feels responsible for the chaos, and Ga-yeong comforts her.
After the ordeal, Ji-ung arrives at Mi-jin’s gate. The mood is somber as they both mourn their lost family members. Ji-ung knows about Mi-jin’s condition, having seen her transform while searching for her. Upset that Mi-jin didn’t confide in him, she explains it wasn’t about trust but her difficulty in sharing something she disliked about herself. Mi-jin suggests they break up to avoid burdening him with her problems and to take responsibility for her actions. She also mentions that working with him was only possible because she became an old woman.
Lim Sun and Ko Won provide statements that align well, raising suspicions among other prosecutors. With Lim Sun’s identity proven stolen, Ji-ung protects Mi-jin by threatening to publicize that Lim Sun solved the case. His boss concedes, especially since Ji-ung is set to return to Seoul.

In episode 15’s closing, Mi-jin’s mother struggles to accept her sister’s murder. Mi-jin, in Lim Sun’s form, apologizes for not being recognized and promises never to leave her again. As night falls, Mi-jin reverts to herself, shocking her mother. The final episode is expected to reveal the cat’s purpose and why Mi-jin’s transformation lasts longer each time. A happy ending with Mi-jin and Ji-ung reuniting seems likely.
Miss Night and Day Episode 15 Review
In this episode, the intertwining themes of identity, guilt, and responsibility reach a crescendo as Mi-jin grapples with the consequences of her actions and the heavy burden of her transformation. The tension escalates with the confrontation between Mi-jin and Na Ok-hui, highlighting Mi-jin’s bravery in facing danger while simultaneously showcasing her vulnerability. The hallucination experienced by Ok-hui serves as a powerful narrative device, revealing her internal turmoil and guilt over Lim Sun’s murder.
This psychological breakdown underscores the moral complexities surrounding the characters, particularly how Ok-hui’s past actions haunt her, blurring the lines between perpetrator and victim. Ji-ung’s search for Mi-jin, guided by the orange cat, symbolizes his instinctual drive to protect her, reinforcing their bond and his determination to find the truth, even as he faces the painful realities of his own family’s history.

The emotional stakes in this episode are further intensified by the revelations of loss and the impact of unresolved trauma. Ji-ung’s heartbreaking discovery of his mother’s fate and his struggle to process this trauma poignantly captures the theme of familial bonds being shattered by violence and betrayal. The contrasting emotions of love, loss, and betrayal are also present in Mi-jin’s interactions with her mother, creating a bittersweet atmosphere as she navigates her dual identity.
The narrative effectively builds suspense and emotional resonance as Mi-jin’s transformation becomes increasingly prolonged, suggesting deeper connections to her aunt’s unresolved issues. The episode concludes with a cliffhanger, leaving viewers eagerly anticipating the resolution of these intricate character arcs and the underlying mystery of Mi-jin’s identity, ultimately raising questions about how individuals confront their past and the lengths they will go to protect those they love.
Miss Night and Day is streaming on Netflix.
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