Nothing But You follows the story of Liang You'an, a professional elite in a career slump, and Song Sanchuan, a badminton player struggling with a psychological hurdle. Their paths cross when they both join a tennis club, where Liang You'an transitions into a club manager and Song Sanchuan shifts his focus from badminton to tennis. As they work together to revitalize the struggling club, they navigate the challenges of their respective professional lives and personal growth. As their professional partnership deepens, a romantic connection blossoms between them despite their age gap and differing life experiences. The series explores themes of resilience, the courage to start over, and the importance of mutual support in overcoming life's obstacles. Through their shared journey, both characters learn to confront their pasts and embrace a future defined by their own terms.