According to show sources, Diddy plays a New York police detective named Reggie Williams who heads to Honolulu to hunt down the men responsible for a brutal crime against his family. But this vigilante's one-man war for justice sets him on a collision course with Team Five-0. Uh oh.
It sounds like Diddy is taking his first action role very seriously. He plans to train with a real Navy SEAL (like Alex O'Loughlin's McGarrett character) and take part in weapons training. As if this wasn't cool enough, viewers will also get to hear several of Diddy's hit songs playing throughout the episode. Book 'em, Diddy!