Cao Xing, a scavenger at the bottom of the interstellar garbage dump, one day picked up a mysterious device calling himself the "Emperor Training System" from the wreckage of an abandoned spaceship. The system told him that as long as he helped a useless prince ascend to the throne, he would gain endless wealth and win his life. Cao Xing refused on the spot - win by lying down? He just wants to pick up trash in peace. The system sneered: If you don't do it, it will be erased.
The next second, Cao Xing was thrown into a continent where steam and magic coexisted, and he discovered that the prince was a salty fish who just wanted to farm, and the real emperor, a tyrant who had lived for a thousand years, was secretly planning an inhumane "soul sacrifice" ceremony. What's even weirder is that the emperor seems to have predicted that Cao Xing will come and has set many traps, as if the time travel itself is part of the conspiracy.
Cao Xing wanted to lie down, but the system tasks came one after another: from helping the prince avoid assassination, to deciphering the alien technology relics under the palace. He was forced to use the scavenger's keen intuition and the incredible skills rewarded by the system to deal with the conspiracy. At the same time, he met the emperor's daughter, a mysterious princess who was burdened with a curse, and the two secretly fell in love while working together.
However, as the investigation deepens, Cao Xing discovers that the emperor hides a big secret about the origin of the universe - all travelers are the "keys" to be selected, and he himself seems to be the most critical piece in this thousand-year chess game. When winning becomes a luxury, Cao Xing can only choose to grow and fight for survival. But every time he thinks he's getting close to the truth, new mysteries emerge like an abyss...
