The voltage is spiking up at the grand outdoor music festival, Summer Sonia! Kongming and Eiko are betting Keiji Maezono to see who can bring in the most guests at their stage. But it's a rocky start for our music talent with only 300 people at Eiko's stage…! Meanwhile, Kongming's strategy is finally coming together when they pull EastSouth over from Keiji's grasp, and the once-missing duo's impressive music has people flooding to Eiko's stage! Although Keiji had them under his thumb for so long, Keiji is finally being driven to the edge of this music war! Just one more push and Eiko will finally win!