PiperNet launches, but an early success makes Monica suspicious; Richard makes a surprising move; the team races against the clock as its future is threatened.

As the guys await the verdict on Pied Piper’s fate, an unexpected real-life drama draws a spike in traffic to their livestream and leaves them fighting to hold things together – literally. While Erlich considers his future, Richard scrambles to save Pied Piper’s.

Ahead of a career-defining moment, Richard makes a startling discovery that changes everything and sends the entire Pied Piper team racing to pull off the biggest bait-and-switch that Silicon Valley has ever seen.

Richard butts heads with Dinesh, whose new position goes to his head. Richard discovers interesting data about PiperChat’s users. Erlich makes a play to be involved in Jian-Yang’s new app. Jared sets ground rules in his friendship with Richard. Gavin’s paranoia over Jack’s enthusiasm causes him to make a rash decision.

Poised to compete at TechCrunch Disrupt, the guys of Pied Piper become worried after an impressive presentation by Gavin Belson. As Jared tries to pivot the company, Richard is inspired to make big changes at the last minute.

An overtired Richard pushes himself to the brink of sanity while trying to move ahead with his next big idea. Eyeing a comeback, Erlich pressures an uncooperative Jian-Yang. Monica sets a trap at Raviga to improve her standing with Laurie. Dinesh goes on a date. Big Head enters the world of academia. Gavin faces an unknown future.

Richard finds himself in a web of lies. Jared plans his exit. Jack bets big. Gavin plots a comeback.

A major event puts PiperNet's capabilities to the test. Monica confronts Jian-Yang over his use of Pied Piper's name.

While Erlich goes on a trip to get his mojo back, the Pied Piper guys take to Hooli-Con to pull off a stealth operation. There, an ethically challenged Jared tries to keep himself in the dark, Gilfoyle and Dinesh get distracted by Keenan and Richard's obsession with an ex's new beau leads him to put their whole plan in jeopardy.

The Pied Piper team races to close a major deal. Dinesh considers being a better person. An angry Jared reluctantly helps Richard.

Monica wants Pied Piper to participate in a livestream event. Erlich reconnects with Double-A, someone he used to mentor. Jared encourages Monica and Carla to be friends.

When Pied Piper and Hooli enter binding arbitration, Erlich demands to be put on the stand. Meanwhile, Big Head finds himself propped up, and Richard worries Hooli’s claim could have legs.

A beta version of Pied Piper gets an unexpected reception as Dinesh's lack of friends worries him. Monica isn't sure she can dole out criticism. A strapped Erlich mulls a big decision. The Nucleus team tackles a difficult challenge from Gavin.

With Pied Piper's future in question, Erlich's publicity success leaves Richard in a moral quandary just as Dinesh's video-chat app starts to pick up speed. While Laurie prepares to jump ship, Gavin's comeback at Hooli is threatened by his displays of grandeur.

In the wake of Pied Piper’s clickfarm scandal, the guys struggle to find funding for Pied Piper’s video-chat app to keep up with their rapidly growing user base. Erlich faces resistance from Big Head’s dad, while Gavin balks after Jack steps on his toes at Hooli. Having a hard time adjusting to his company’s pivot, Richard gets sage advice from an unexpected source, leading him to a big idea that could change his future.

Richard is faced with a tough decision, regarding the future of Pied Piper. Dinesh flirts with a woman online.

Erlich has new competition. The Pied Piper staff has a hard time giving less than their all. Monica stands her ground. Gavin reaches a decision about Nucleus.

Shocking stats are revealed and prompt Richard to bridge the gap between Pied Piper and its users, but Jared must go to extremes to keep everything intact. Gavin tries to recapture his former glory by bringing in new talent after discovering secrets about the competition.

When Richard reaches out to an unlikely ally, Jared worries about the company he's keeping. Gilfoyle gets tough on security in the wake of Dinesh's latest dalliance; later, he considers whether to put his pride aside for a job. Concerned about Jian-Yang's commitment to his app, Erlich takes matters into his own hands.

Cracks in Richard's latest partnership become more apparent when he's forced to deal with an unexpected interloper. Dinesh scrambles to find a way out of his new relationship as things get more serious. After learning of surprising developments afoot at Raviga, Monica has trouble deciding which horse to back.

Richard discovers his promise that Pied Piper won’t collect user data is under threat. Jared longs for the past. Gilfoyle gets creative in dealing with Dinesh.

Richard meets a potential investor. Gilfoyle butts heads with HR. Gavin explores a leaner Hooli's future.

After being unceremoniously fired, an angry Richard faces a tough decision: accept the diminished role of CTO, or leave Pied Piper for good. Erlich takes a shine to Jack Barker, Laurie’s new choice of CEO, while Dinesh and Gilfoyle weigh their options in Richard’s absence. At Hooli, Gavin tries to improve his image by admitting failure, and Big Head gets wind of major changes.

Erlich tries to be honest with Richard, who has mixed emotions about their friendship and the future of Pied Piper. Jared's new company apparel turns heads but fuels yet another clash between Dinesh and Gilfoyle.

An unexpected increase in data traffic leads Richard to turn to Erlich for help in garnering a deal with Keenan Feldspar, Silicon Valley's latest “it” boy--but when Keenan makes a too-good-to-resist offer, Richard must weigh Pied Piper's future against a potential mutiny. Jack faces setbacks while preparing for Hooli-Con.