A spell from Babadi has accidentally caused Goku and Ichigo to switch powers. Aizen has freed all of the villains from Hell. The Soul Reapers and Z-Warriors work together to stop the evil that Aizen has caused. However, this is only the beginning of Aizen's master plan. Set before the fake Karakura Town and after the defeat of Kid Buu.

When the G-Revolutions' summer is disrupted by the arrival of Gingka and co, how will both sides react? Why don't these newcomers know what a bit-beast is? Why are their blades made of metal instead of plastic? And why are they so afraid of Tyson?