Su Nian, a college student, unexpectedly gets caught up in a twenty-year-old unsolved case in an ancient Miao village. To protect herself, she is forced into an unexpected life-and-death pact with Shen Du, who is on the verge of death. Drawing on ancient Miao techniques, Su Nian awakens a remarkable ability to distinguish insects through sound waves and understand the language of extraordinary insects. Her childhood sweetheart, Xie Yunzhou, protects her every step of the way, while her fiancé, Gu Changyuan, becomes deeply entangled in a conspiracy and is manipulated by others. As the truth comes to light, Su Nian breaks free from the bond that ties their lives together, lets go of misplaced feelings, and joins hands with Xie Yunzhou to pass down traditional ethnic medicine and protect the peace of the ancient village.