Zoidberg unwittingly gets hold of money stolen and lost by the Robot Mafia which he spends at a casino run by Amy's parents. When the Robot Mafia then take over the casino and the family fortune with it and Zoidberg is accidentally turned invisible by Farnsworth, Amy plans a heist to get the casino and money back.
Tropes for this episode:
- Bait-and-Switch: While planning the heist, Amy says that she aims to return the casino back to its rightful owners. Initially, everyone thinks she's referring to her parents. She was actually referring to the Native Martians, who now have legal ownership of the casino thanks to the original deal they made with the Wong family expiring.
- Broke Episode: Amy's parents lose everything they own to the Robot Mafia and since they were also the ones who paid for Amy's rent, she's forced to live her parents among the impoverished Native Martians.
- By "No", I Mean "Yes": After an ink-covered Zoidberg is hit by the Professor's ink polarizer:Farnsworth: My god, he was so saturated with ink, that his entire body structure was polarized!Zoidberg: You mean I'm invisible?Farnsworth: No, no, no, not in any sense of the word. But essentially, yes, entirely.
- Casino Episode: The Planet Express crew decide to spend the day away at the Wong Casino at Mars Vegas, and later help stage a heist to get the Wong fortune back.
- A Day in the Limelight: This episode works as a double-feature for Zoidberg and Amy, who quickly find themselves in trouble thanks to the Robot Mafia.
- A Fool and His New Money Are Soon Parted: Upon getting his claws on $8 million in cash, Zoidberg proceeds to gamble it all away at Mars Vegas. He actually manages to make over $10 billion at the roulette wheel, but lets it ride one too many times before he's broke again.
- Glad I Thought of It: Lampshaded by Donbot when Joey Mousepad suggests they take over the casino:Donbot: What are you, an idiot?Joey: Pretty much, ya.Donbot: Then you won't notice when I claim your idea as my own.
- Heist Episode: Amy schemes with the rest of Planet Express to reclaim her family fortune and the deed to the land back from the Robot Mafia.
- Invisible Main Character: After covering himself in ink to escape the Robot Mafia, Zoidberg is hit by Farnsworth's ink polarizer and rendered entirely invisible. Amy decides to use this to advantage by having Zoidberg smuggle hundreds of dollar bills out the vault at the Wong Casino by swallowing them.
- Medium Blending: The opening sequence of this episode is done using scale models and puppetry instead of the show's usual animated opening.
- Native American Casino: The Wongs have many Native Martians working at their casino, having taken their land over a century ago and underpaying them for their services. Amy later recovers the original deed to the casino property, revealing that the Wong family's rights to the land have expired and hands control of the casino back to the Martians.
- The Nose Knows: Blind Joe works as security guard at the casino. His greatly enhanced sense of smell compensates for his lack of eyesight.
- Rich in Dollars, Poor in Sense: Amy.Amy: Don't worry, mom. You can stay home with me.
Inez: No, we cant, you idiot! Who do you think pays your rent?
Amy: What's rent?
- Series Continuity Error/Unexplained Recovery: Despite being blown out of orbit in "A Farewell to Arms", the planet Mars is brought back to normal condition with no explaination.
- According to the DVD commentary, an explanation was planned before being cut for time.
- The delivery men the Robot Mafia rob at the beginning look and talk exactly like Jar-Jar Binks.
- The roulette ball at the casino is a Quidditch snitch.
- Fry returns from Mars Vegas with a Mike Tyson tattoo, a reference to its appearance in the Vegas-based comedy The Hangover.
- The song "Hey, Big Lobster" is a spoof of "Hey, Big Spender" from Sweet Charity.
- After Zoidberg is covered with a white powder, Amy pokes his belly to get him to cough up a suitcase. When she first pokes his belly, he briefly giggles like the Pillsbury Dougboy.
- Stomach of Holding: Amy's heist involves Zoidberg swallowing all the money, as well as the suitcase that contains the contract with the Native Martians.
- Stylistic Suck: The opening sequence is done with hastily made models, with the rods and hands holding them up plainly visible. Likewise, all diegetic sound from the ships during this sequence is done by people just off-screen.
- Visible Invisibility: It tends to vary depending on scene-to-scene, but a faint outline can be seen around Zoidberg after he's turned invisible.