Yun Hui is a freshman at Haicheng University who delayed her enrollment by a month due to a national competition. She is a social recluse with severe social anxiety, stemming from a childhood marked by exclusion and a lack of familial support. Yun Hui is secretly a lesbian, a fact she hides from everyone, including her new roommates, Meng Yao and Bai Yueming. Upon arriving at her assigned dormitory, Room 316, she feels a mix of relief and anxiety, preferring the quiet of a sparsely occupied room. Her first encounter with her roommate Bai Yueming is awkward; Bai Yueming is tall, bold, and perceptive, quickly noticing Yun Hui's shyness and the yaoi novels Yun Hui keeps hidden. Yun Hui's social anxiety is further highlighted when she struggles to navigate the campus, particularly during a chaotic incident at the cafeteria where she accidentally orders a couple's meal and later gets lost trying to find a non-existent South Gate delivery station.
The narrative shifts when Yun Hui spots a striking woman on the university sports field who kicks a soccer ball with impressive skill. This woman is Yin Han Sou, the majority investor and de facto owner of Haicheng University, who is on campus to oversee the construction of a new teaching building. Yin Han Sou spots Yun Hui during her night run and becomes immediately intrigued, viewing the shy girl as prey. Their paths cross again when Yun Hui, desperate for directions, approaches Yin Han Sou, mistaking her for a broadcasting senior due to her formal attire. Yin Han Sou, amused by Yun Hui's innocence and shyness, decides to guide her to the delivery station but conditions the favor on Yun Hui calling her "sister." The interaction deepens as Yin Han Sou takes Yun Hui to a high-end restaurant, where Yun Hui pays for the meal, unaware that Yin Han Sou could buy the entire establishment. During this time, Yun Hui reveals a hint of her troubled family background when she reacts negatively to questions about her parents.
A pivotal moment occurs when Yun Hui is caught in a heavy rainstorm after class, having forgotten her umbrella. Yin Han Sou finds her and offers shelter, eventually taking her to Yin Han Sou's off-campus apartment. Inside, the dynamic between them shifts as Yin Han Sou reveals her true dominance and possessiveness. She discovers Yun Hui's collection of lesbian novels, confirming her suspicions about Yun Hui's orientation. The tension culminates in a confession where Yun Hui admits her feelings, leading to their first kiss. Yin Han Sou, who has been orchestrating the encounters, asserts her control over Yun Hui, convincing her to stay the night under the guise of avoiding dormitory check-in procedures. The story explores the power imbalance between the socially anxious, gentle Yun Hui and the cold, calculating, yet affectionate Yin Han Sou, setting the stage for a relationship defined by pursuit and submission. Yun Hui's past as a confident martial artist, which she hid after being bullied, is briefly revealed, showing the depth of her trauma and the contrast with her current timid demeanor.
