A college student who was originally ordinary and living peacefully in the 21st century, inexplicably became one of the messengers on the important mission of "repairing the loopholes in time and space" because of a race. As soon as he arrived in this inexplicable world, he discovered that he had been poisoned by his enemy... Ancient times was not a place to worry about after all. If you wanted to leave, you had to complete the so-called "mission", but you didn't know what the task was, let alone how to complete it. The road is long and long, and I will go up and down without seeking anything...