Ye Fei, a student who was raised by his sister-in-law and was often bullied by others, accidentally entered a heroes exchange group. There were actually many mythical people from all eras and worlds in it. So Ye Fei traded with them with modern things, obtained martial arts powers, and eventually became the world's number one master. He opened tunnels and could enter the eras of various group members at will, and began to compete with heroes from all eras.
