A campus romance between Shin Seungwon, a former soccer player now majoring in sports rehabilitation, and Kwon Jaeyoon, a model student from the business department— After undergoing surgery for tinnitus in her left ear, business student Kwon Jaeyoon returns to campus a year later—only to encounter Shin Seungwon, the man she had an unrequited crush on five years ago. Before she can collect her thoughts, they end up attending the same class, and Seungwon’s bold advances begin to unsettle Jaeyoon’s heart once again. When Jaeyoon injures her leg late at night, Seungwon starts escorting her home every day. Feeling uncomfortable with such one-sided kindness, Jaeyoon decides to help Seungwon with his sports rehabilitation practice instead— But despite her efforts to stay composed, Jaeyoon’s body keeps reacting instinctively, betraying her attempts to ignore her feelings. Worried that Seungwon might misunderstand her as a pervert, Jaeyoon finds herself in an increasingly awkward and confusing situation.