The time has come for Franchouchou to take the stage at the Saga Rock musical festival. But clouds are starting to gather, with the thunder and lightning causing Ai to freeze up in fear. Who will help re-animate her so that the show can be a success?

It's been a long time since Saki used to fight an army of rival bikers in the darkness, but an unexpected encounter with the family of an old friend draws her into back into the kind of rough scene that could be anathema to her idol activities.