Li Er, a 17-year-old girl with significant hearing impairment in her left ear, faces rejection after expressing her feelings to a boy named Xu Yi. Xu Yi, however, has feelings for Li Bala, who is actually in love with Zhang Yang. Li Er becomes friends with Li Bala, who tragically dies in an accident. As the story unfolds, Li Er gradually lets go of her animosity towards Zhang Yang, whom she initially held responsible for Li Bala’s death.