Beth is immediately hesitant and tries to stall, but Dean, fueled by a desire to prove his business acumen, ignores her warnings.
In Season 4, Episode 2 of , titled " Big Kahuna " , the central plot involves an undercover sting operation by Federal Agent Dave, who poses as a massive client for Dean’s hot tub business. The "Big Kahuna" Sting [S4E2] Big Kahuna
This episode marks a major shift where the investigation into the girls' counterfeit operations becomes much more personal and dangerous. Good Girls Season 4 Episode 2: 'Big Kahuna' Review Beth is immediately hesitant and tries to stall,
Annie attempts to keep up with the wealthy parents at her son Ben’s school. Her efforts highlight the growing distance between her lifestyle and Ben’s world at his father's house, as she tries to prove she belongs in that social circle. Good Girls Season 4 Episode 2: 'Big Kahuna'
A "huge client" representing Big Kahuna , a major spa brand, approaches Dean about a potential partnership. Dean, excited by the prospect of a legitimate business windfall, fails to see it is a trap.
Ruby and Stan, already feeling intense guilt, fear the family is going to continuously ask for money. When the topic of a "financial arrangement" is raised, Ruby snaps and tells them they "don’t owe [them] a thing".
The episode ends with Dean being arrested for money laundering because he handed over the incriminating books to the undercover agents.