Breakfast on Plutofollows the exploits of Patrick "Kitten" Braden, an endearing but deceptively tough young man. Abandoned as a baby in his small Irish hometown, and aware from a very early age that he is different, Patrick survives a harsh environment with the aid of his wit and charm, plus a sweet refusal to let anyone or anything change who he is. Apart from a few moments of piano music composed by Jordan's daughter, Anna Jordan, the film avoids a conventional score.