Some offices exhibit stereotypical dynamics: the chauvinistic boss who never does any real work; the employees whose goal is to suck up to him; those whose lives seem perfect; and the individuals who have all the actual work pushed onto them. Retsuko the red panda belongs to the last group, as she stays late most nights to make up for the work her coworkers are too lazy to do themselves. Her relief from the stress of everyday life comes in the form of singing death metal at a local karaoke club. Night after night, Retsuko channels her grief into a microphone and considers the place to be her own personal sanctuary. But as she moves further away from her comfort zone and the ideas people have of her, she discovers that letting others into her world of death metal may not be such a bad thing.