Hot-headed Misako and her upbeat best friend Kyoko are stuck in detention at River City High when a phone photo shows their boyfriends, Kunio and Riki, apparently being kidnapped. Wasting no time, the two friends bust out and take to the streets, storming through the city in search of answers. Brawling their way past every gang, thug, and boss who stands in their way, Misako and Kyoko battle across River City to track down and rescue the two missing boys.