Clay has two episodes dedicated to his point of view. The first is his testimony during the Bakers' trial, and the other revolves around a memorial for Hannah Baker where Clay finally says goodbye to the girl he loves. But telling Clay's story isn't as simple as summarizing the two episodes, so we'll briefly cover three major plot points — the trial, the Polaroids, and the thwarted school shooting.
When Clay testifies, the words bounce back to hurt him. He tries to inform the jury that Hannah experienced bullying at Liberty High, but the defense argues his status as Tyler Down's bully (for the bare-ass photo) and his vandalism of Zach Dempsey's car makes him a key part of the system he so desperately wants to condemn. They also cite a night he spent with Hannah doing molly as a sign that she was already depressed and that her suicide wasn't the school's responsibility.
Meanwhile, Clay receives a series of Polaroids in his locker. The mystery develops into a conspiracy surrounding the jocks of Liberty High taking advantage of female students in a storage shed dubbed, "the Clubhouse." With the help of Justin Foley, Jessica Davis, Sheri Holland, and Tony Padilla, Clay discovers the location of the shed and obtains the incriminating Polaroids taken prior to each conquest.
Following Bryce Walker's contrived trial testimony and the sudden theft of the Polaroids, Clay resolves to take matters into his own hands. He heads to the Walker home with a loaded gun borrowed from Tyler, determined to threaten Bryce into telling the truth. The voice of Hannah rings in his head describing the rape, and we come to realize that Clay is having a major breakdown.
Justin Foley follows our hero and tries to reason with him. Clay replies, "No one's going to get justice for her . . . . I can't count on anyone else anymore. I have to do this myself." When Justin tells Clay that hurting Bryce won't bring Hannah back, Clay puts a gun to his head to stop the voice of Hannah. Clay looks as if he might pull the trigger, but Bryce walks onto the scene, and the voice stops. Clay knows that killing himself would mean victory for Bryce and a perpetuation of the cycle of the pain cycle that Hannah hoped to avoid.
In fact, the support Justin offers in this moment mirrors some of the advice Clay gives to Tyler in the final episodes of the season when the photographer attempts to shoot up the Spring Fling.