In 2070, the protagonist, He Qi, is a lieutenant colonel in the Chinese Space Force. The newly formed Space Force is primarily responsible for clearing meteorites from Earth's orbit. During a mission, a meteorite fragment damages the engine of He Qi's small spacecraft, sending it out of control. With no other choice, He Qi can only take the nuclear bombs aboard for clearing meteorites and crash into a lake on Titan...
A hundred years later, in 2170, scientists awaken He Qi. They explain that they need him to report what really happened during that disaster. It turns out the object that hit the spacecraft's engine wasn't a meteorite fragment, but a beam of light flying at tremendous speed. There are obvious burn marks on the spacecraft's hull.
He Qi begins adjusting to the future, but soon discovers that his former unit has been disbanded. When he asks his superiors, he learns that 50 years ago, a fugitive spacecraft entered an unknown region while being pursued by several large starships. When the pursuing fleet was about 200,000 kilometers from the fugitive ship, several streaks of light shot over the fleet, then pierced the fugitive starship and flew straight into the cosmic abyss...