With both their finances and their reputations in tatters, Jake and Freddy must find a way to rebuild. With the help from Tessa Pryor, a smart, capable and gorgeous lawyer, and Jeff Reardon, a sober coach, Freddy is seemingly on a better path. The discovery of a magnificent diamond rough may put the brothers back on top – or it may tear them apart forever. Meanwhile, the death of a loved one drives Lady Rah to wage war on a powerful diamond conglomerate – from the inside. Cam joins forces with his estranged son Malcolm Rose in order to navigate the dangerous underworld of blood diamonds. And Ava is determined to provide a better life for her daughter and herself – even if it means making a deal with the one person she swore she’d never ask for help… her own mother.
With the Green Family in shambles, Jake realizes that finding the Holocaust Diamond will put them back on top –but a fruitless search leaves a dangerous trip to Venezuela as the Green Brother’s only option.
Jake and Freddy attempt to steal diamonds from the Venezuelan mine that they no longer own - but when the Cartel learns of their subterfuge, they find themselves running for their lives.
On the run from the Cartel, Jake and Freddy are saved by one of the Venezuelan miners and his family - but when the Cartel learns where they are, Jake & Freddy's presence jeopardizes the entire family.
When Freddy and Jake fail to find someone they can trust to cut their rough diamond, Freddy decides to cut the stone himself, and model it after the famed "Anastasia Diamond".
While Freddy attempts to cut the Anastasia Diamond, Jake faces down the Chinese Triad in order to earn their buy in for a prestigious Diamond Expo in South Africa.
Freddy, high as a kite, struggles to cut the Anastasia diamond as Jake goes to Alexi for protection. Cam's hell-bent on revenge and Lady Rah offers to help Ava with an important client.
An armed robbery at Ava's house leads to a momentary truce between Jake, Ava and Cam. Freddy finishes the Anastasia diamond, and Jake goes to Tessa for help.
To get to South Africa in time for the diamond conference, Jake must find Freddy and get the "Anastasia appraised. Lady Rah proposes her plan to re-certify the world's most expensive diamonds, and Cam heads to London to confront Malcolm's mother.
With the diamond expo and recertification process underway in Cape Town, Jake and Freddy try to sell the Anastasia diamond. Lady Rah offers to help Ava and adds another name to her hit list when part of her plan goes awry.
Lady Rah has put a bounty on Jake's head, and the brothers must retrieve the Anastasia from its hiding place and run for their lives. Willow and Ava face a vengeful Alexi, and Cam finally avenges Malcolm's death.