Han Gongzhu (Qian Yuxi) is a 17-year-old ordinary girl who loves music and hopes to become a singer one day. However, she should have been in the happiest and carefree years of her life, but she completely lost her smile because of an accident and gave up her dream of singing. Leaving her hometown where she was born and raised, Han Gongzhu became a transfer student to a new school. Here, Han Gongzhu met many kind friends. With the guidance and help of her friends, Han Gongzhu gradually walked out of the shadow of the past, and the smile returned to her face again. However, the happy days did not last long. The gloomy past was unwilling to let go of this poor girl. When the past swept in, a secret that Han Gongzhu tried every means to hide finally surfaced.