In the 21st century, the hardworking worker Xiao Song was plotted against by his ex-girlfriend Su Xue during a drinking session, triggering an unknown energy field and being swept into the vortex of space and time. When he woke up, he found himself in a strange and ancient world—the primitive era. Here, time seemed to have frozen on the eve of the dawn of human civilization, and Xiao Song was faced with a primitive land untouched by modern civilization. In the distance, a group of savages was watching this suddenly appearing outsider with curious and alert eyes.