Frustrated with her thankless office job, Retsuko the Red Panda copes with her daily struggles by belting out death metal karaoke after work.

From her mother meddling in her personal affairs to a nightmarish new coworker, Retsuko's still got a lot to rage about in her karaoke sessions.

Retsuko’s rage rises another octave when she finds herself moonlighting with an underground idol group to pay off her debts.

Retsuko turns up the volume to stop Haida from making the biggest mistake ever when a sly new company president takes the office to a new extreme.

In this final season, Retsuko faces her biggest challenge yet when she's thrown head first into the world of politics. Get out the vote for Retsuko!