*CBS is hyping Sean “Diddy” Combs’ upcoming guest appearance on “Hawaii Five-O” via just released BTS/behind-the-scenes footage.

It starts out with Combs’ character Reggie Williams in an interrogation room with Alex O’Laughlin’s McGarrett. From there we see various scenes interspersed with comments from the regular cast members and Diddy.

If you’re wondering about the plot, Williams visits 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.

The episode, titled “Ho’opa’i (Close to Heart),” scheduled to air on April 18, also features music from Diddy.