The Rising Volt Tacklers have all come to the Land of Kitakami to meet with Terapagos researcher Briar. The land is currently in the middle of a harvest festival that the group end up taking part in, where Friede takes great interest in the Yabasocha belonging to Seille, a girl he meets there. Meanwhile, Roy and Achigator accidentally touch a machine set up at a stall, which causes them to switch bodies...?!