Gil Grissom and Sara Sidle come to the aid of a former colleague who is implicated in tampering with evidence. Maxine and the rest of the CSI team work the murder of a couple slain on their wedding day, following the evidence to the salacious underbelly of the Las Vegas elite.

The CSI team investigates when a body is dug up in the luau pit of a Hawaiian-themed hotel. Also, Internal Affairs begins to question Grissom and Sara's return to the crime lab.