Two high school voice actresses, Yuuhi Yuugure and Yasumi Utatane, who happened to attend the same school and ended up in the same class, host a weekly radio program together. Despite appearing friendly on air, their off-air relationship is tumultuous as they are complete opposites - Chika being quiet and reserved while Yumiko is outgoing and flamboyant. The two cannot stand each other and engage in chaos and insults when not performing. It remains to be seen where this tumultuous relationship will lead them.