Mist Fortress

As the apocalypse threatens to consume human civilization, the nation launches a cross-time plan, sending an executor to a 2004 campus to alter the doomed timeline. The male lead, leveraging his abilities, becomes a second-level clerk in the intelligence bureau, bearing the burden of saving his race. Amid meticulously planned rescue schemes, he secretly observes the girl he once loved in his youth. As historical crises loom, several girls develop feelings for him, while patriots from all walks of life unite to protect the nation. In a nostalgic era, the grand mission of civilization's salvation intertwines with delicate youthful emotions. Upholding national integrity and cherishing youthful encounters, a single time travel reverses humanity's fate.