Yuna (voiced by Kawase Moki) looks like an ordinary girl who stays at home and is addicted to the Internet, but in fact she is a hardcore player in the massive virtual reality multiplayer online role-playing game "Fantasy World Online". One day, Yuna logged into the game as usual, but found that she was inexplicably wearing a "bear suit". Although this bear-like suit looks very stupid, this set of equipment has super properties. If she takes off this set of equipment, Yuna can't survive in this dangerous world. In this way, Yuna, who has transformed into a bear girl, embarked on a new journey. The kind and pitiful girl Fina (voiced by Kazumi Waki), the cute but particularly bad-hearted Noya (voiced by Hidaka Rina), the mature and stable, noble lady Mishana (voiced by Amano Satomi), in this process, Yuna met many interesting partners.