In the early 1990s, Du Xiangdong (played by Qin Hao), a top student at the police academy, was assigned to a detention center contrary to his wishes.Two suspects under his care accidentally escaped and one died and the other disappeared.The criminal Xu Wenguo (played by Han Geng) has been absconding for a long time. Prison guard Du Xiangdong is relentless in his pursuit, but the case progresses slowly.As time went on, this pursuit not only penetrated into the lives of their relatives and friends, but even became the driving force and background of their destiny.More than 20 years of battles of wits and courage fully demonstrate the forbearance and brilliance of all living beings under the tide of the times.