Felix leaves a half-honest voicemail for his mom about being in Boston for a business meeting and attending a Celtics game. He, Benji, and Laura spend the day together. Over lunch, Felix learns that Laura is a Lakers fan and has season tickets. She also reveals that she likes skiing, has never played Minecraft, and has fallen asleep at the opera at least eight times.

Benji spends $7,200 to purchase tickets three rows from the court and buys two of everything at the merchandise stand. At their seats, Felix stands throughout most of the first quarter, refusing a hot dog out of guilt from a previous incident. When Felix tells Laura that he would attend every game if he were a billionaire, she warns that doing something too often makes it less special. Laura reveals that she wishes she could relive March 20 from 18 months ago.

During halftime, Felix is selected for a half-court shooting contest with a $10,000 prize. Using a two-handed underhand shot, he makes the basket. The crowd erupts, and when he is asked what he’ll do with the money, Felix realizes that he hadn’t been thinking about money at all; he says that he’ll give it to his mom.

Benji arrives at the hotel restaurant to find his parents, Felix, Ms. Rannells, and Reggie waiting. His mother confronts them about skipping school. Benji’s father, Jack, grows angry about the money being spent, eventually knocking over his chair. He then leaves abruptly to make his scheduled flight. The parents establish new rules: The boys must ask permission before going anywhere, and they cannot skip school. Benji’s father insists that they limit their spending to 10 dollars per day. Felix agrees but lies and claims that Reggie has a contract.

At school, Benji arrives in the Bugatti, causing a stir. He finds Alma waiting at his locker with a thank-you card in which she apologizes for being judgmental when he invited her to Disney World. When Benji jokes that she should have said yes, she replies that maybe she will next time; her response flusters him. In homeroom, Aidan snatches the card, reads it mockingly, then drops it and steps on it. Benji retrieves the dirtied card, feeling angry.

Ignoring their parents’ new spending limit, Felix and Benji rent a gym to play a version of H-O-R-S-E called M-O-N-E-Y, agreeing to spend $100,000 between games. During breaks, they shop online. Benji buys a Stormtrooper costume for $15,000 and then buys Frodo’s pants (movie memorabilia from The Lord of the Rings movies) for Felix for $9,000. He then shops for vintage Air Jordans, but Mr. Trulz, the challenge’s overseer, informs them that they can only buy shoes in their own sizes. Benji purchases $77,010 worth of sneakers, and Felix buys a sneaker-cleaning kit.

During their next game, Benji reveals his basketball anxieties. He has been playing since age four, and everyone has always expected him to be a star, but now he worries that he won’t make the middle school team. Making the team is the one thing he really wants to do, especially because he wants to make his father happy.

On Veterans Day, the boys get permission to take a trip to New York City, chaperoned by Ms. Rannells, Georgie, and Reggie. The group takes a train into the city. Georgie and Ms. Rannells go shopping for a wedding dress while the boys visit a comic book store. Benji asks the clerk for Action Comics #1, which she doesn’t have, but she offers a Batman #1 for $41,000. After identifying themselves as Laura Friendly’s millionaire boys, they buy $68,980 worth of comics.

At lunch, Benji removes the Batman #1 from its protective case. A waiter objects loudly, but Reggie argues that the comic’s true purpose is to be read. The waiter screams when Benji opens it anyway. The boys read all the valuable comics while eating, getting them greasy and stained with ketchup. They throw away the protective cases as they leave.

At the bridal shop, Georgie is trying on her dream Limor Rosen gown, which costs over $6,000. Felix’s mom tells Georgie that it is too expensive and forbids her from asking Felix to pay for it. Felix’s mom wants to buy a dress for Georgie herself, but she says they’ll find something more affordable.

When Felix expresses frustration to Benji about not being able to buy things for others, Benji devises a loophole. He says that Felix can buy the wedding dress for himself, use it once, then let Georgie borrow it. When Georgie and his mom exit with Georgie crying, Felix announces that he’ll buy the dress. His mom stops him, feeling hurt that he is taking away her chance to buy her daughter’s wedding gown. Felix tells her that she can’t afford it. She refuses his offer of using the $10,000 prize money, insisting that something doesn’t have to be expensive to be special. For the first time, Felix senses that his mother is disappointed in him. Unsure of how to fix his mistake, he goes inside. Benji joins him, and they each buy a wedding dress in accordance with Benji’s idea of using a loophole.

At school, Aidan and Luke complain about the daily pizza, demanding tacos instead. Benji agrees, then overhears Aidan saying that he knew Benji would comply with his demand. Alma finds Benji and suggests that if he wants to do something nice, he can help to hang posters for the drama club fundraiser on December 1. She warns him that if he keeps buying things for people, he won’t know who his real friends are.

After school, the boys put on their wedding dresses to satisfy the use-what-you-buy rule, taking selfies as proof. At the bar in the hotel restaurant, a TV report shows country singer Danny Devon cursing Laura Friendly and her tech platform, Friendly Connect. Felix declares that Laura is their friend and they need to defend her. Benji proposes buying all the remaining tickets to Devon’s concert in Chicago the next night, forcing him to play to a mostly empty venue. They confirm that more than 1,000 tickets are still available and proceed with the plan.

Among their many online purchases, a T. rex skull and a Triceratops skull arrive at the hotel. To hide these items from their parents, the boys rent two additional rooms for storage. Felix gets his mom’s permission to attend a concert by omitting the fact that the event is in Chicago. Reggie, a big Danny Devon fan, does a cartwheel when he learns of the plan. They take a private jet to Chicago.

Scanning their 1,442 tickets takes over an hour. The first 10 rows are nearly empty due to their purchase. After his first song, Danny Devon notices the empty rows and curses. Benji records his reaction as they taunt the singer. Devon retorts that he still gets paid and continues. Not wanting to be part of their confrontation with the singer, Reggie moves to a different seat.

Felix and Benji relocate to the concession area. Felix expresses his doubts about the effectiveness of their revenge; he feels exhausted by the constant pressure to spend money. When Benji asks what Felix will do with his millions when they win, Felix says that he plans to buy houses for his mom, Georgie, and Michelle. Felix reveals that he hasn’t seen his father in years and was worried he would only show up for the money. He confesses that it feels worse that his dad didn’t come at all. Benji comforts him by saying that Felix’s dad is missing out.

The boys purchase two racehorses, Leading Lady and New York Speed Machine, for $115,000 plus daily boarding fees. They then rent 200 digital billboards across New York, displaying philosophy quotes, a Spider-Man quote, and a congratulatory message for Georgie and Michelle. Benji proposes hiring a famous band as a wedding gift. When Felix mentions that Georgie loves a song by Apex-7, Benji says he’ll look into it.

At Wendy’s, Benji pays for an elderly man who cannot afford a full meal. To convince the suspicious man to accept, Benji tells a small lie, claiming that the man reminds him of his grandfather. Inspired, they buy lunch for every customer who enters. Mr. Trulz calls to question the spending but allows it as long as they remain on the premises.

Laura Friendly summons them to the Times Union Center. At the empty arena, Felix explains that they defended her because Danny Devon insulted her, and she is their friend. Laura explains the business history behind Devon’s anger. As thanks for their loyalty, Laura blows a whistle, and four NBA All-Stars—Christian Hamilton, Elijah Nichols, Xavier Cahill, and Caleb Autry—walk onto the court. She tells them they’ll play three-on-three for an hour, then reveals that the experience costs $500,000. Benji enthusiastically agrees.