After the trouble at the hot springs, the girls get an opportunity to promote a local legend. After they fail to chicken out, their next gig involves a train to Kashima to steal a muddy spotlight.

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?