A grieving man receives a mysterious, personal invitation to meet with God at a place called "The Shack."

"Inspired by true events, the story begins with Japanese rugby officials dwelling on a humiliating anniversary, a 145-17 defeat by the New Zealand All Blacks in the 1995 World Cup. Officials question their decision to appoint Eddie J

A large monster attacks Japan, but dies suddenly. While the people rejoice and bask in relief, the giant corpse left behind begins to slowly rot and bloat. If it explodes, the nation will be destroyed.

When the evil Dr Hell attacks the Earth, the mighty giant mecha Mazinger Z is formed to stop him.