Love is in the air at SSF Headquarters when Bulldozer proposes to Black Fox, but she runs away from her feelings for the cyborg. Bulldozer discovers Black Fox's secret love for sports and thinks this is what she's been hiding all along, but when the Demon Slayer Ninjas show up to kill Black Fox he realizes how wrong he was. Bulldozer protects Black Fox with his life, and the clan shows him no mercy. Bulldozer is 'saved' by Dr. Valery, but is more man than machine now.

Later, Black Fox discovers the bittersweet news that she's pregnant with Bulldozer's child. When Bulldozer falls under Nova Inara's control he attacks Black Fox, but he ends up remembering his love for her. Nova Inara challenges the SSF to a Death Cube Battle - the prize is a de-robotisization machine that can be used to restore Bulldozer to his original state. It's the Samurai Superheroes Force versus the Nemesis Zeros! A dragon alien takes the place of one of the Nemesis Zeros so that he can fight Jake Lonestar. If Jake loses Ryuuzaki plans on conquering the planet. Will Jake be able to find the courage he needs to defeat the evil dragon, save the Earth and his friend Bulldozer?