「こんな星、ハシリヤンにやっちまえよ」 彗星の如く現れた焔先斗とビュン・ディーゼルは ブンドリオに会いたいとブンブンジャーに接触を図る。 しかしながらブンドリオはそれを拒否。 ブンドリオとビュンディーはかつてBBGでしのぎを削ったライバルだったが、 負け続けていたブンドリオにとっては苦い思い出だったのだ。 一方、地球を捨てたと語る先斗と 地球を守るため戦う大也の対話も平行線を辿る。 涼しげな顔の裏に炎を宿す男と 過激な言葉の裏に影を漂わせる男。 2人がわかり合える未来はあるのか──。
``Let's leave this planet to Hashirian.'' Homura Ponto and Byun Diesel, who appeared like a comet, contacted Bunbunger to meet Bundrio. However, Bundrio refused. Bundrio and Bundy used to be rivals in BBG, but it was a bitter memory for Bundrio, who kept losing. On the other hand, the dialogue between Ponto, who says he has abandoned the Earth, and Daiya, who fights to protect the Earth, runs parallel. A man with a fire behind his cool face, and a man with a shadow behind his radical words. Is there a future where these two can understand each other?
