A sudden outbreak of prions in Daxia produced a large number of zombies. Xia Tiegang was also unfortunately infected with this virus and became a member of the zombies. However, he was lucky enough to awaken the ancestor of "Ultraman Zero" in his body, and by chance, he was taught a set of alpha secrets. Afterwards, he joined the Great Xia Kingdom's counterattack against the Alliance Army and helped humans defeat the zombies and regain their lost territory. However, he died in a rescue mission to protect the alliance leader Huang Junjie. Then he was reborn and returned to seven days before the virus broke out... Then he and Huang Junjie worked together to find the truth about the virus outbreak and win the dawn of victory for mankind.
