The hero of the story is U-1, an awkward young elementary school student ridiculed and scorned by his peers. Even his secret flame, Little Piko, despises him. His only friend and companion is his small dog Puma.

But U-1 has a secret--he is the descendent of a legendary hero: Gitaroo-man! This fated legacy draws him into the middle of a battle between the people of Planet Gitaroo and the evil Grabaren family. Set out to recover the legendary power of Gitaroo and restore peace to your planet!

• Distinctively Japanese wackiness comes to America in a color-bombed rhythm explosion!--Your instrument is your weapon to fight against evil!
• Play your music with both analog sticks and controller buttons presses together to make music and engage in action at the same time!
• CG movie sequences propel the story and bring you into these character's bizarre lives!--Multiplayer VS mode for up to 4 players!
• Music by the Japanese pop band Coil!