Marta Walraven, a stay-at-home mom in tony Marin County, near San Francisco, has spent most of her life staying out of her father's world of organized crime. But when her loving husband, Evan, who supports the family by exporting marijuana, is brutally murdered in their driveway, everything changes. Marta's primary concern is to protect her three children - and yet when an FBI agent promises justice in exchange for her cooperation, she hesitates to go against the "Bratva" (Russian mob) code. Evan's business partners - Marta's scheming brother, Irwin Petrov, and their best friend, the hapless Mike Tomlin - were involved in the theft of millions of dollars of cocaine from a formidable international crime boss, Nicholae Schiller. Evan paid with his life, but as far as Schiller is concerned, his debt is not clear. It is up to Marta, as Evan's widow, to navigate the criminal underworld in order to repay this debt - whatever way Schiller sees fit.