Gatchaman! Tekkaman! Casshan! Polimar! The four heroes have begun to get used to their new home, but people are now disappearing one by one from Shibuya... including the heroes themselves! As evil looms near, will anyone remain to oppose it!?

It all began when high school student Emi Kaido received a mysterious, wish-granting pencil. With her life on the line, Emi uses the pencil to call upon heroes for protection! Gatchaman! Tekkaman! Casshan! Polimar! These defenders of justice cross space and time to help Emi weave the greatest tale of all time!

Para Bellum's plan has the world racing towards destruction, but Gatchaman, Tekkaman, Casshan, and Polimar unite to confront this great evil! Little time remains, and it's now that the heroes must show their true value!