Audition writer Ryu Murakami returns to shock and surprise movie lovers with this darkly satirical comedy about an absurd street war between two gangs of violent, karaoke-loving outsiders. The Gakis are a gang of young slackers whose primary passion in life is staging elaborate karaoke recreations of the nostalgic, Showa-era songs (classic hits from the 1940s to the 1980s) they grew up on. The Midoris are a group of thirty-something female divorcees who share a similar passion for classic karaoke hits, yet despite their similar interests these two crews are about to become locked on a cataclysmic collision course. When a Gaki is rejected while trying to pick up a Midori, the humiliation proves too hard to handle and he instinctively kills the woman. The Midoris quickly retaliate, and the war is on.