The red panda, Retsuko, has a repetitive work routine and releases her stress through death metal karaoke occasionally. Her life becomes more bearable with the support and friendship of her new companions, Washimi and Gori. However, her stable pattern is threatened with unforeseen changes. The new employee, Anai, seems to be a great asset to the company, but Retsuko discovers his loyalty may put the workplace in danger. Additionally, Retsuko's mother visits unexpectedly, determined to find her a suitable husband and settle her down, obliging Retsuko to attend marriage interviews. As her worries pile up, Retsuko relies on death metal karaoke once more for relief. She recognizes that this is not a permanent solution, so she decides to approach her problems more spontaneously. Consequently, she embarks on a quest of self-exploration and romance, with death metal karaoke providing a constant source of comfort.