The "Great Collapse" event three years ago caused the real world to merge with the other world. Some soldiers obtained the mark of "boundary marks" and became time travellers. Xiang Wentian encountered a space rift while on duty and was drawn into another world to save his comrades. He was forced to become a mercenary in a different world with a language barrier. He found that his military skills resonated with the magic of the other world. After getting acquainted with the wandering scholar, he discovered that there were signs of man-made manipulation in the collapse of the two worlds. When he was given the opportunity to return to the original world, he chose to stay and investigate the truth that could save the two worlds.
