When Riley realises that her parents, Cory and Topanga, are making a positive impact in the world, she questions the impact she's having.
NCIS agents Nick Torres and Jessica Knight travel to Hawai'i when they learn a key witness in one of their old cases has turned up there with crucial evidence.
Tennant's team, along with NCIS agents Nick Torres and Jessica Knight, tracks The Raven's whereabouts to the island of Oahu and learn about his plans to attack the world's largest international maritime warfare exercise.