Indigo 7 tells the story of Nathan and his music band, who go on holiday together after him being dumped by his girlfriend. In a beautiful coastal city where the Sun seems to make everything brighter, the boy finally recovers his will to live after meeting a girl named Debbie and becoming involved in a battle of bands with his friends. But the path to success won’t be so easy, since Nathan starts finding new rivals that come between him and his happy ending. In that situation, there’s only one thing to do: smash them with the power of music!