During a fundraiser, the body of a young woman is found. Governor Denning refuses to lock down the hotel, which forces Five-0 to launch a low-key investigation. When the team almost causes an international incident with Russia, the Governor decides that one of the team should be fired. Also, Chin Ho faces the grueling task of choosing a Valentine's Day gift for Malia.

Five-0 crosses paths with Tony Archer, a retired NYPD bomb expert who is now a private investigator on Oahu, when they investigate the death of famous talk radio DJ Bobby Raines.