In the Ukraine, a mob snitch’s trail leads to Chernobyl, and Mac, Jack, and Riley follow him. Meanwhile, Matty asks Wilt to investigate the break-in at her home.
The partying son of a Serbian war criminal takes his new bride to an exclusive French chateau for their honeymoon, and Matty assigns Leanna to work with Wilt, Mac, and Riley to go undercover and find out where the father is. Meanwhile, Jack convinces Elwood and Jill to help him break into Matty’s house to find out what she’s hiding from Mac.
The assassins that Murdoc has been gathering turn against him and sell him to Phoenix. However, Murdoc’s mentor Nicholas Helman wants Murdoc dead and will do whatever it takes to kill him. Meanwhile, Jack considers his relationship with Diane when she moves back to LA.