To celebrate the fifth anniversary of Bushiroad's mobile rhythm game BanG Dream! Girls Band Party!, a two-episode special anime will be aired and streamed simultaneously. The story of the special anime centers on "CiRCLE THANKS PARTY!", an event to thank the fans who have supported the bands since the days of the live house CiRCLE. The 35 girls scramble to prepare for the event, which will include food stands and live performances. And then, Kasumi and the others decide to perform a new song together at the live...