Jenny [Park Min-ji] and Juno [Kim Hye-sung] are a 15-year-old couple who meet in school, and their connection quickly grows into something sincere and fragile. Jenny is portrayed as bright, pretty, and thoughtful, while Juno comes across as cute, cool, and athletic, recently transferred to the school. When Jenny discovers she is pregnant, they decide to embrace parenthood rather than consider abortion, choosing to move forward together with a quiet but determined resolve.
To support Jenny, Juno takes on small jobs, including delivering newspapers, so they can afford the food and other needs that come with a baby on the way. He strives to fulfill the duties of a caring partner and father, staying by Jenny’s side through her changing body and increasing fatigue, and focusing on her nutrition as they anticipate the arrival of their child. Their relationship deepens as they share simple moments—occasional walks around the neighborhood, light conversations, and a sense of shared responsibility that binds them. Yet tension sparks when a girl named Pyoy tries to flirt with Juno; Jenny’s jealousy surfaces, and Juno gently asks Jenny not to let such incidents endanger their baby, underscoring the seriousness with which he views their situation.
The couple tries to keep the pregnancy under wraps from their families for as long as possible, finding small pockets of time to prepare and imagine a life with their child. Jenny’s middle sister detects the news, and the truth eventually comes out. Jenny’s mother [Kim Ja-ok] offers a stern, protective response, while the broader family dynamics reveal strong disapproval from Jenny’s father [Lim Dong-jin] and from Juno’s own parents, [Kang Nam-gil] and [Lee Eung-kyung], who worry about the implications of such a young pregnancy. The growing pressure forces them to confront a plan they hadn’t fully considered: the possibility that Jenny might be sent to the United States to live with an elder sister, a move that would separate the two and complicate their future.
Despite the odds, the two marry later in the month, with the help and support of their classmates who rally around them. A sense of urgency fills their days as they learn more about the consequences of their decision, and Juno becomes increasingly determined to protect the life they have created together. News of Jenny’s impending departure—if not outright separation—only intensifies the longing and longing to stay connected. Throughout this period, Jenny’s elder sister helps in practical ways, while the couple continues to navigate the emotional maze of love, duty, and family expectations.
Eventually, the moment of truth arrives when Juno learns that Jenny is being moved, and he waits outside Jenny’s home, hoping for any sign. Jenny’s sister, unable to bear the heartbreak, tells him that Jenny was inside the mansion, and the news travels quickly. When Juno finally finds Jenny, her labor begins; her water breaks, and she is rushed to the hospital where she gives birth to a boy. In the final stretch, Jenny and Juno are not simply young parents but also students of life, with Jenny pushing Juno to study hard so that he can gain admission to a top university. Their future becomes a joint project—one that will require strength, patience, and continued support from family, as their son is cared for by Jenny’s mother while the couple focuses on their studies and their shared dream of a better life.
