The year is 1999X. After a curse causes Bunny to grow cat ears when a purrmodynamic power plant explodes, she is led by a chubby and divine messenger into the Cave of Devils so that she can remove the hex. However, a mad bull appears out of nowhere, killing the messenger after stabbing him 24 times! An improved version of the dungeon-crawling action game 'Bunny Must Die! Chelsea and the 7 Devils' is now coming to Nintend Switch™. March through the Cave of Devils together with Bunny, her five weapons, and her ability to manipulate time however she pleases!