Jiang Che and Lin Wei, two college students who had never met each other before, fell into the Shuangqiao Machinery Factory in 1985 and became technicians because of an overlapping old dream. Faced with unfamiliar work clothes and male identity, Lin Wei had flaws everywhere.
The two people without the memory of the original owner struggled in the daily life of the factory. They relied on modern knowledge to cope with it, and finally inadvertently discovered the doubt: Are "Xu Zhenyang" and "Song Yan" good or bad? Two souls misplaced in the torrent of the times, finally realized that this time travel was not an accident...