Bojack calls Diane to say he is back in L.A. finally going to her house where a fundraiser for Mr. Peanutbutter's campaign is being held. While Mr. Peanutbutter is making a speech, an earthquake happens, followed by the house falling underground with all the guests inside.
Mr. Peanutbutter becomes the group's leader, quickly whipping the group into a frenzy; he then attempts to talk with Diane, but she is angry at him, blaming fracking for their situation. She runs away to their bedroom, where she finds BoJack drinking and Diane decides to join him. PC gets stuck outside the house and finds Todd in the pool bathroom, and they try to find a way out together.
Governor Woodchuck comes in to help, but warns that help will take a long time to come because of the lack of money for emergency services caused by the bridge being built to Hawaii. Mr. Peanutbutter tries to get the crowd to make Woodchuck the leader, but this results in him accidentally breaking Woodchuck's hands, which makes Woodchuck unable to rescue the trapped people. PC and Todd run into an underground group of ant warriors, who mistake PC for an actual princess and ally themselves with her, in order for PC to negotiate a deal for them with their queen. Woodchuck creates a functional society underground by rationing food and water. Katrina however, uses BoJack's attempt at getting more food to force Mr. Peanutbutter into a power position when she senses they might lose votes to Woodchuck.
Diane looks for a way to end the fire-worshipping cult of Jessica Biel, and the group decides to dig to find underground water. Unfortunately, they burst a water pipe and the house starts to flood. PC and Todd get the issues done with the Ants, but when the Ant Queen realizes that they are from the Aboveground, they send everyone back to avoid gentrification, physically lifting and setting the house back in its original position.
Back in the Aboveground, Jessica Biel tells everyone they won't talk about what happened in the house and the five leads awkwardly debate where to get lunch.
Tropes:
- Adam Westing: Jessica Biel plays herself in this episode and, in addition to being portrayed as a murderous psychopath, is also subjected to numerous jokes about her being a C-list, irrelevant celebrity.
- Ax-Crazy: Jessica Biel, who proposes lighting people on fire for warmth as a first resort and, later, resorts to cannibalism.
- Balloon Belly: Downplayed, but BoJack clearly gets bloated from all that alcohol.
- Black Comedy Cannibalism: The celebrity mob runs out of food and promptly resorts to cannibalism. Their first victim? Zach Braff.
- Bittersweet Ending: Diane and Mr. Peanutbutter make up and Mr. Peanutbutter realizes that he's not fit for government, but their house is destroyed.
- Black Comedy: Pretty much the whole episode, but the crowning moment is undoubtedly Mr. Peanutbutter realizing that they're now all standing in the ruined remains of his mansion just as he's telling Diane "Let's go home."
- Bottle Episode: Save for Princess Carolyn and Todd's adventure with the ant colony, the whole episode takes place in Mr. Peanutbutter's house. Diane and BoJack spend most of the episode in the master bedroom, forcing them to work out their problems (Diane is mad that BoJack never told her he came home).
- Celebrity Casualty: Zach Braff is killed and cannibalized during a cave-in at Mr. Peanutbutter's fundraiser.
- Chekhov's Gun: All of the fracking under Mr. Peanutbutter's house has left a giant empty cavern under the foundation of his house, which caves in, taking the entire property (fully formed, mind you) with it.
- Continuity Nod: Diane points out that BoJack can just get Hollyhock's adoption papers from the courthouse, because she has an adopted brother introduced in "Live Fast, Diane Nguyen".
- Cross-Dressing Voices: No surprise, RuPaul as Queen Antonia.
- Deus Exit Machina: Princess Carolyn is in the poolhouse when the house collapses and goes off underground with Todd, preventing her from being the Only Sane Man to the celebrities in Mr Peanutbutters house.
- Drowning My Sorrows: Diane and BoJack spend most of the episode drinking the entire house dry of it's liquor while they talk.
- Forgettable Character: When BoJack talks to Diane about all the important people in his life who have died in the last few years, she mentions Corduroy Jackson Jackson, the actor in the "Secretariat" movie who died in Season 2 due to autoerotic asphyxiation (an event that was played as dark comedy and not taken all that seriously by the show). BoJack only remembers who he is after his cause of death is mentioned.
- Furry Reminder: Mr. Peanutbutter senses the earthquake before it hits, just like a real dog, and a party guest comments when everyone is panicking about the earthquake that she never has any original ideas and just repeats what everyone says - she's a parrot.
- Hidden Depths: Did you know Diane could juggle?
- Let Us Never Speak of This Again: Jessica Biel says this to the other party guests once they're all above ground again.
- Modesty Towel: Todd spends the entire episode in one.
- Nice Job Breaking It, Hero:
- Not only does Mr. Peanutbutter's fracking causes the house's foundation to collapse under it's own weight, but he gets Woodchuck Coodchuck-Berkowitz trapped with them and breaks his hands, then turns everyone in the house against him to save his own popularity despite Coodchuck-Berkowitz clearly being better at organizing citizens in time of crisis. Everything goes downhill immediately.
- BoJack and Diane, meanwhile, dig for water under the house when none is left, and eventually find some... in a water main that they end up breaking, nearly drowning everyone.
- No Ending: The episode just stops as Diane, Mr. Peanutbutter and Todd realize they're now all homeless, ending on BoJack randomly mentioning that he likes Injera.
- No Good Deed Goes Unpunished: Woodchuck tries to save Mr. Peanutbutter and the others regardless of the political rivalry and later on attempts to organize the group in a rational manner, he ends up getting hands crushed beyond repair and is tied up by the Ax-Crazy survivors.
- Only Sane Man: Woodchuck Coodchuck-Berkowitz, as usual. Not only is he capable of saving everyone, but also organizing them in a civilized matter once he's trapped there with them.
- Open the Door and See All the People: Inverted. Princess Carolyn walks in on Todd taking a bath in the pool house during the party. And only after the entire property is underground.
- Running Gag: Zach Braff constantly asking someone to validate his parking. While trapped underground.
- Seinfeldian Conversation: The episode ends with BoJack, Princess Carolyn, Todd, Diane and Mr. Peanutbutter randomly talking about Ethiopian food after BoJack, seemingly unbothered by the events that have just transpired, proposes that they all go out for some.
- Ship Tease: Diane cuddling up to BoJack, saying that he's the only thing that makes sense to her. Even BoJack seems surprised by this.
- Subterranean Sanity Failure: Played for Black Comedy. While Mr. Peanutbutter is hosting a fundraising party for his campaign in the California gubernatorial election, his entire mansion suddenly plunges deep underground due to an earthquake caused by oil fracking operations in his (literal) backyard. 10 days pass, and with food, water, and oxygen slowly running out, all of the party guests trapped inside (including multiple Hollywood celebrities and employees) quickly grow violently insane and start fighting with each other for dominance. Jessica Biel even murders Zach Braff by setting him on fire and whips up most of the other survivors into following her fire-worshiping cannibal cult. They are rescued the next day, and agree to never mention these events again.
- Truth in Television: Dogs really can sense when earthquakes are coming, sometimes several minutes before they occur.
- Villainous Gentrification: Played for Laughs, the ants decide to put the house back in its place because they fear gentrification from surface dwellers.
