Love Untangled

In 1999, nineteen-year-old girl Park Se-ri is about to make the most important confession of her life. As she plans to straighten her lifelong complex, her severely curly hair, she gets entangled with a transfer student named Han Yoon-seok, leading to a youthful romance.

Park Se-ri is a cheerful highschool student who is insecure about her natural curly hair. She has a crush on Kim Hyun, a fellow popular student in her school. A new salon "Jangmi salon" opens up in her town and offers "Seoul Magic Hair Straightening" which she can't afford. Se-ri befriends a new transfer student Han Yoon-seok after she saves his life from drowning. When she learns that the salon is owned by Han Yoon-seok's mother, she helps him out to score points with his mother. However she is genuinely a good friend to him and helps him come out of his shell. Se-ri learns from a neighbor that Yoon-seok's father is a professor in a medical university in Seoul and his pressure and disappointment in Yoon-seok lead him to give up on writing the CSAT.

Yoon-seok and Se-ri's friends help her plan her confession to Kim Hyun during a school trip but Se-ri backs out at the last moment, admitting to him that she liked him a lot but now she realizes she loves someone else. Se-ri and Yoon-seok briefly start dating but Yoon-seok rushes to Seoul to be with his mother after being assaulted by his father.

Se-ri follows to Seoul but overhears Yoon-seok telling his mother that his aunt wants him and the mother to come to the US to escape the domestic violence from his father, but he wants to go back to their life in Busan. Wanting a peaceful life for them away from the father, Se-ri leaves a voicemail to Yoon-seok that she liked him as a friend and doesn't want to continue their relationship.

Months later, Se-ri graduates and is pursuing Marine sports in college. Her friends arrange a blind date for her, which she doesn't attend. She gets a call from the date who reveals himself as Yoon-seok. She apologizes for saying mean things to him on the voicemail but he understands having heard her other voicemail she intended to delete. They get back together and the group rejoice their union.

• Gong Myung as Han Yoon-seok
• Shin Eun-soo as Park Se-ri
• Cha Woo-min as Kim Hyeon
• Yoon Sang-hyeon as Baek Seong-rae
• Kang Mi-na as Go In-jeong
• Choi Gyu-ri as Ma Sol-ji
• Lee So-i as Bang Ha-young
• Son Hee-rim as Jung Da-ul
• Ryu Seung-soo as Hong Il
• Kim Ji-young as Bok-hee
• Hong Eun-hee as Jang-mi
• Jo Bok-rae as a homeroom teacher
• Chun Myung-woo as Sang-cheol
• Lee Da-eun as Hye-ri
• Kim Chan-hyung [ko] as Seok-jin
• Park Ji-young as Seon-mi
• Kim Hee-jin as Yu-jeong
• Jung Yi-rang [ko] as a canteen lady

Gong Yoo, Jung Yu-mi and Park Jeong-min made special appearances.^[5]

The trailer of the film was released on July 31, 2025.^[13] The film was made available to stream exclusively on Netflix on August 29, 2025.^[14]