This is the fourth game in the series and the first developed specifically for Nintendo DS and sees a change of direction for the story line with the introduction of new defense attorney Apollo Justice and a host of new characters. Players star as rookie defense attorney Apollo Justice as he visits crime scenes, questions key witnesses and collects vital evidence before stepping into the courtroom to prove his clients' innocence. Facing Apollo across the courtroom is the highly talented and flamboyant prosecutor Klavier Gavin who, in addition to being a legal genius, is also lead singer with Gavinners, a highly successful rock band with a string of hits to their name.