A diamond dealer navigates the culturally diverse and treacherous world of the diamond business.

Jake and Freddy smuggle Lady Rah's diamonds into Vancouver, but things don't go as planned. Cam and Isaac butt heads over the direction Green & Green is taking. New evidence comes to light in the Avi Kreshman case.

While Cam and Pieter scheme to gain control of Green & Green, Ava takes a bigger role in the family business against Jake's wishes. In the wake of his father's death Freddy takes steps to get clean. Carlos hits a dead end in his investigation.

Freddy and Jake attend an underground diamond auction. Pieter and Cam meet with a Venezuelan diplomat about re-opening an abandoned mine. The U.S. Attorney's investigation into Pieter Van de Bruin causes problems in Ava's new relationship.

Jake and Lady Rah form an uneasy alliance against Pieter. Freddy and Ava work together to gain access to a Russian diamond syndicate. Cam's relationship with Sarah takes a turn for the worst.

Jake and Cam are on opposite sides after Vincent's murder brings the conflict between Lady Rah and Pieter to head; and Freddy and Ava try to turn their fortunes around in Russia.