Accidental time travel: Yan Shuyao, a music therapist in 2023, traveled to the future world of 2187 in a subway accident and discovered that humans in this era are engaged in a cruel war with alien creatures \\\\\\\\\\\\\\\\\"The Void Tribe\\\\\\\\\\\\\\\".
Lack of music: In the future world, due to war and technological development, the art of music has almost disappeared. Human beings have lost the ability to express emotions and heal the soul through music.
Unexpected discovery: Yan Shuyao accidentally sang a 21st century song at the medical station and successfully calmed a soldier who was corroded by void energy, attracting the attention of senior military officials.
Military Recruitment: After being taken to a military base, Yan Shuyao meets war hero Major Lin Mo, who is skeptical of her abilities but agrees to let her try therapy
Mission: Music heals