At 11:23 a.m. on December 12, 2019, the apocalypse arrived, nearly destroying everything.
On October 11, 2039, humanity faced the "greatest crisis in history." An Cheng, humanity's "last shield," stood alone against the enemy. He never took a single step back, fighting until he fell in battle and buying humanity precious time to catch its breath, along with a glimmer of hope for victory.
The night the hero fell, the whole world dressed in mourning.
At 11:23 a.m. on October 12, 2039, carrying memories of the hero and the darkest years, humanity across the globe returned to twenty years earlier!
This is the story of a people who, in the face of their greatest crisis, save their hero, confront the apocalypse, and change their fate.
