In the Season 4 finale, Richard's caught in a web of lies in a last-ditch attempt to save Pied Piper. Meanwhile, Jared plans his exit when he's worried about Richard's future; Jack tries to change the narrative; and Gavin plots his comeback.
Erlich goes on a trip to get his mojo back while the guys head to Hooli-Con, where Jared faces a moral dilemma; Gilfoyle and Dinesh are distracted by Keenan; and Richard becomes obsessed with an ex's new beau.
Richard decides to stand up to a patent troll, but his defiance comes back to haunt him; Gilfoyle goes to extremes to battle Jian-Yang's new smart fridge; Jared embraces multiple identities in an effort to reduce costs; Erlich mixes with a group of alpha males.
A hunt for financial support takes Richard outside the tech bubble, where he encounters a contentious figure from Pied Piper's past. Meanwhile, Erlich contacts Monica and Laurie about a new endeavor; and Jared plays peacemaker between Dinesh and Gilfoyle after a launch goes awry.
Richard's latest partnership begins to crumble when he has to deal with an unexpected interloper. Meanwhile, Dinesh looks for a way out of his new relationship; and Monica faces a business dilemma after learning of surprising developments at Raviga.
Jared worries about Richard when he reaches out to an unlikely ally; Gilfoyle gets serious about security after Dinesh's latest dalliance; Erlich grows concerned about Jian-Yang's commitment to his app.
Richard pushes himself to the brink of sanity while trying to move ahead with his next big idea; Erlich finds Jian-Yang unwilling to help with his comeback; 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's future is suddenly uncertain.
Richard clashes with Dinesh when the latter's new position goes to his head. Meanwhile, Richard uncovers interesting data about PiperChat's users; Erlich tries to get involved in Jian-Yang's new app; and Jared sets ground rules in his friendship with Richard. At Hooli, Jack's enthusiasm causes a paranoid Gavin to make a rash decision.
In the Season 4 premiere, the guys struggle to find funding for Pied Piper's video-chat app to keep up with their rapidly growing user base. Meanwhile, Erlich encounters resistance from Big Head's dad; Gavin clashes with Jack Barker at Hooli; and Richard hatches a revolutionary idea that could change his future.