WER intelligent robot was engaged in exploring the mystery of Khufu Pyramid in 2014. By following the icon and trap cautions, the smart robot opened a colorful and flashing tunnel which later turned to be the Time Tunnel and led him to the Stone Age.
After entering the Stone Age, all communication with the modern world was interrupted, so the smart robot started helping locals do their daily work and survive by instinct.
And the smart robot finally got its payback. He eventually returned to the modern world before the Time Tunnel closed, while bringing the great discovery with himself.