Lin Wei, a quantum scientist in the 23rd century, traveled to the Gobi Desert in 1970 because his experiment went out of control and was mistaken for a "American imperial spy." In the storm and struggle, she relied on her knowledge and wisdom of future science and technology, and with the secret help of military officer Zhou Zhenguo, she gradually uncovered the space-time conspiracy behind her father's unjust case, and launched a cross-era confrontation with the "Shadow Alliance". Faced with the choices of family, faith and return, Lin Wei finally chose to protect this era and become the guardian of time and space connecting the past and the future.
