Despite being born deaf, Lin Chao has a strong connection with her brother Lin Mu who lifts the spirits of everyone around him with his cheerful demeanor. Meanwhile, Lu Rong had a challenging upbringing due to the loss of both parents and caring for his grandmother with Alzheimer's, causing him to mature quickly at a young age.
Their paths eventually cross at Kunqian, a learning institution for those with special needs. The outgoing Lin Mu and reserved Lu Rong, along with their classmates, including a deaf-mute, visually impaired, and cerebral palsy patient, embark on a journey together.
Understanding Lu Rong's struggles, Lin Mu reassures him, "Don't worry, I understand the challenges of having a family member with special needs. You can let your guard down around me." This eases Lu Rong's anxieties.
