Emi is a seventeen-year-old girl living in Shibuya. Her father is always away with work and she's grown listless. Suddenly, a twist of fate involving a certain magical item changes everything. A mysterious pencil, of all things, is linked to the appearance of heroes from another world! Could this be the start to the excitement she's so desperately craving, or is there something more?

Gatchaman, Polymar, Tekkaman and Casshern join forces for a new fight. This time, Joe Asakura also returns. Is he a friend or a foe?