Season 1 Richard Hendricks, an employee of a tech company named Hooli, creates an
app called Pied Piper in his spare time that contains a revolutionary
data compression algorithm. Peter Gregory acquires a stake in Pied Piper, and Richard hires the residents of Erlich Bachman's
business incubator, including Bertram Gilfoyle and Dinesh Chugtai, along with Jared Dunn, who also defected from Hooli. Meanwhile Richard's best friend, Nelson "Big Head" Bighetti, chooses to accept a substantial promotion at Hooli instead, despite his lack of merit for the job. Gavin Belson instructs his Hooli employees to
reverse engineer Pied Piper and develop a similar product called Nucleus. Both companies are scheduled to present at
TechCrunch Disrupt. Pied Piper rushes to produce a feature-rich
cloud storage platform based on their compression technology. At the TechCrunch event, Belson presents Nucleus, which is integrated with all of Hooli's services and has compression performance equal to Pied Piper. However, Richard has a new idea and spends the entire night
coding. The next morning, he makes Pied Piper's final presentation and demonstrates a product that strongly outperforms Nucleus; he is mobbed by eager investors.
Season 2 In the immediate aftermath of their TechCrunch Disrupt victory, multiple
venture capital firms offer to finance Pied Piper's
Series A round. Peter Gregory has died and is replaced by Laurie Bream to run Raviga Capital. Richard finds out that Hooli is suing Pied Piper for
copyright infringement, falsely claiming that Richard developed Pied Piper's compression algorithm on Hooli time using company equipment. As a result, Raviga and all the other VC firms retract their offers. Richard turns down Hooli's
buyout and accepts funding from controversial billionaire Russ Hanneman, though Richard quickly begins questioning his decision after learning about Hanneman's mercurial reputation and his excessive interference in day-to-day operations. Belson promotes Big Head to Hooli [xyz], to make people think he created the compression algorithm and that Richard stole it to create Pied Piper. Belson agrees to drop the lawsuit in favor of
binding arbitration to prevent the press from finding out about how bad Nucleus is. Due to a clause in Richard's Hooli contract, the lawsuit is ruled in Pied Piper's favor. Raviga buys out Hanneman's stake in Pied Piper, securing three of Pied Piper's five board seats. However, they decide to remove Richard from the
CEO position due to previous incidents.
Season 3 After a failed stint with Jack Barker as CEO of Pied Piper, Richard eventually regains his CEO position. Due to Jack wasting all their money on offices and useless marketing, a cash strapped Richard hires contract engineers from around the world to help construct their application platform. Big Head receives a $20 million
severance package from Hooli in exchange for
non-disclosure and non-disparagement agreements. Big Head uses his money to set up his own incubator and Erlich partners with him. However, because of their spending habits, they declare bankruptcy, and Erlich is forced to sell his stake in Pied Piper to repay the debts. Gavin Belson hires Jack Barker as the new head of development at Hooli. After release, their platform is positively reviewed by members of the industry. However, only a small fraction of the people installing the platform remain as
daily active users due to its complex interface design. Meanwhile, Jared secretly employs a
click farm to artificially inflate usage statistics. An anxious Richard reveals the source of the uptick at a
Series B funding signing meeting, leading to the deal being scrapped. Laurie no longer wishes for Raviga to be associated with Pied Piper and moves to sell majority control to any investor. Erlich and Big Head are able to buy control of the company after an unexpected windfall from the sale of a blog they bought. Pied Piper now prepares to pivot again, this time to become a video chat company, based on the sudden popularity of Dinesh's video chat application which he included on the platform.
Season 4 Richard steps down as CEO of Pied Piper, and instead begins working on a new project: a decentralized, peer-to-peer internet, that would be powered by a network of cell phones without any
firewalls, viruses, or government regulations. Gavin Belson is removed as CEO of Hooli after an incident involving
COPPA violations from when he seized PiperChat. Jack Barker takes his place as CEO. Gavin temporarily works with Richard, until he has an existential crisis and leaves Palo Alto for
Tibet. Laurie and Monica form their own VC company, Bream-Hall. Big Head becomes a lecturer at
Stanford University's Department of Computer Science. Erlich gets into business with Keenan Feldspar, whose VR headset is the Valley's latest sensation. However, Erlich is left out of a signing deal and is abandoned by Feldspar, leaving Erlich disillusioned. Erlich then goes to Tibet to meet with Gavin. Belson eventually returns home, while Erlich stays behind. Richard gets into business with FGI, an insurance company, who uses Pied Piper for their data storage needs. After a crisis involving FGI's data storage, the team discovers that the decentralized internet is a working concept after the data from their Pied Piper server had backed itself up to Jian-Yang's smart refrigerator, as Gilfoyle used some of the Pied Piper code when he was trying to hack it, which in turn connected itself to a network of other refrigerators like it and distributing the data. Gavin ousts Jack from Hooli and regains his position as CEO. He offers a very generous acquisition deal to Richard, who turns it down and decides to be funded by Bream-Hall.
Season 5 The Pied Piper team gets new offices and hires a large team of coders to help work on Richard's new internet. Meanwhile, Jian-Yang manages to convince a judge that Erlich is dead so that he can inherit Erlich's estate, including the idea incubator and the 10% share of Pied Piper. Richard promotes Jared to be the new
chief operating officer for Pied Piper, and Jian-Yang goes to
China to build a
knock-off version of Pied Piper. Bream-Hall forces Richard to team up with Eklow, an AI team, and Pied Piper puts together a group of developers. When Eklow's CEO almost destroys Pied Piper's credibility, Richard becomes fed up with Laurie and considers using Gilfoyle's idea to create a
cryptocurrency for Pied Piper as a way to secure an independent source of funding. After initially opposing the idea, Monica realizes that Laurie plans to make Richard sell ads for his
decentralized internet, and warns him. In gratitude, Richard offers her the newly vacated role of
CFO at Pied Piper, and she accepts, finally cutting ties with Laurie. After unimpressive results from their
cryptocurrency, Pied Piper is distraught when Laurie teams up with a wealthy Chinese manufacturer, Yao, who had been working with Belson to steal Jian-Yang's Pied Piper patent. Yao and Laurie add users to Pied Piper's network via a large number of newly manufactured phones, and prepare for a
51% attack against Pied Piper's network in order to take control of developing it. Richard asks Belson to put their software onto Hooli's Signature Box 3 network in order to stop Yao and Laurie, and Belson does so, but betrays Richard by teaming up with Laurie and Yao to delete Pied Piper. At the last minute, Pied Piper recruits Colin, another developer betrayed by Laurie, to run his popular video game
Gates of Galloo on the Pied Piper network, adding users and allowing Pied Piper to maintain control of enough of the network to block Yao's and Hooli's machines from accessing it. Meanwhile, due to the losses incurred in launching the unsuccessful Signature Box 3, Hooli's board of directors announce plans that force Belson to sell the company to
Amazon and
Jeff Bezos. PiedPiperCoin gains traction, and the season ends with the Pied Piper team moving into a huge new office space vacated by Hooli.
Season 6 Pied Piper has become a large company of 500 employees with Richard speaking before
Congress on his ideology of a new internet that does not collect user data. He is shocked to learn that Colin's online game
Gates of Galloo, part of the Pied Piper family, has been collecting user data the entire time. Colin refuses to stop, but Pied Piper depends on his game's revenue, so Richard seeks new investment in order to cut Colin loose. He finds shady Chilean billionaire Maximo Reyes, who offers Richard $1 billion. When Richard turns him down, Maximo begins staging a hostile takeover of Pied Piper. Meanwhile, Richard's right-hand man Jared has left Pied Piper to seek new up-and-coming talent in need of his support. Hooli, once a tech giant headed by Richard's rival Gavin Belson, downsizes drastically after most of the company is sold to Amazon. Pied Piper purchases what remains of Hooli, including its subsidiary FoxHole.
CFIUS judges foreign ownership of FoxHole to be a threat to national security, and Maximo is forced to sell all of his shares of Pied Piper. Gavin, free from his Hooli position, launches a new campaign for "Tethics" (tech ethics) which leads to an investigation that would tie up Pied Piper's business dealings. Richard is able to maneuver out of this with the help of Russ Hanneman. However, Pied Piper must now help Russ with his music festival RussFest. At RussFest, Richard suspects Laurie may be sabotaging their software as it is failing. It turns out neither Yao Net USA nor Pied Piper scale. Instead of quitting, Richard integrates Gilfoyle's AI (with some edits from Dinesh) into PiperNet and it works better than anyone could have expected, allowing Pied Piper to close a deal with
AT&T. However, the team soon realizes that in this effort to maximize compression and efficiency, PiperNet's AI has found a way to bypass all encryption, causing a potential global threat if launched. Thus Pied Piper is forced to intentionally fail in order to save the world from their own creation. They are successful in crashing the launch, sabotaging it in such a way as to discourage future attempts. There is a 10-year flash forward to see where everyone is, ending with Richard misplacing a flash drive with the potential world security-threatening code on it. ==Cast and characters==