Ozark continues to follow Marty Bryde and his family as they navigate the murky waters of life within a dangerous drug cartel. With Del out, the crime syndicate sends their ruthless attorney Helen Pierce to town to shake things up just as The Byrdes are finally settling in. Marty and Wendy struggle to balance their family interests amid the escalating dangers presented by their partnerships with the power-hungry Snells, the cartel and their new deputy, Ruth Langmore, whose father Cade has been released from prison. The stakes are even higher than before and The Byrdes soon realize they have to go all in before they can get out.

Ruth's dad gets out of jail. Approval for a riverboat casino calls for Wendy's political skills. The Mexican cartel demands reparations from the Snells.

When a mobster jeopardizes the casino bill, Marty enlists Buddy's help. Wendy resorts to dirty tactics to get votes. Cade reminds Ruth of her roots.

Wendy does damage control when Wilkes's pressure on Sen. Blake backfires. Rachel is sent on a mission. Ruth resists accepting her Langmore destiny.

The FBI sends out a second lure. Charlotte slips up while chatting with Wyatt. The Byrdes grow wary of Rachel, who deflects suspicion onto someone else.

Agent Petty's revelation tests the loyalties of Marty, Ruth and the cartel. Despite the FBI closing in, the Snells refuse to destroy their poppies.

An FBI search of the Snells' field yields a surprise. Playing hardball, Agent Petty questions Wilkes. The Byrdes mourn a loss.

Mason goes off the deep end and focuses his rage on the Byrdes. Ruth tries to make her dad proud during a boat-part heist.

Darlene makes one too many rash moves. Marty tries to free Rachel from Agent Petty's grasp. Jonah helps his mom force Wilkes to continue his support.

Marty finds a way around the Snells. Charlotte hires a lawyer. The Byrdes get a meeting with the gaming commission, whose approval comes with a big ask.

Marty makes plans without telling Wendy. Darlene sends a message via Jonah. Wyatt learns the truth about his dad. Ruth realizes Cade must be stopped.