This is a story about girl named Lammy Lamb. She's a guitarist in a band called Milk Can with her friends Katy Kat the bass player, the vocalist, and the leader of the band. And their friend Ma-San is a mouse on the drums. The three girls lived in a place called Parappa Town where they performed the most. But one thing that Lammy and her friends didn't know this is was a start a grand adventure.