Crazy Ex-Girlfriend (season 3)

The season picks up two weeks after the season 2 finale, with Josh having left Rebecca at the altar, she, Paula, Valencia, and Heather try to devise a plan to take him down. Rebecca decides to make a fake sex-tape with a Josh look-alike, and hires an actor to play Josh and ruin his reputation. When Paula puts a stop to the plan, she ropes the others into suing Josh for emotional distress. Meanwhile, Darryl tries to help White Josh take off his protein bar business.

Rebecca schemes Nathaniel into her plan to take Josh down by promising him sex in exchange for him destroying Josh, but he takes it too far by trying to murder Josh's grandfather and almost getting his father deported. As Rebecca realizes she didn't want to hurt Josh but confront him for what he did to her, she goes to the church during mass and tells him everything that she has done to try to make them get together, ruining their chances at a lawsuit. At Whitefeather & Associates, Tim struggles with learning he is unable to give his wife an orgasm.

Rebecca tricks Paula into stopping the lawsuit, saying she believes the case is too weak rather than telling her about how she revealed everything to Josh. Heather is forced to graduate from college. Josh quits priest-school and tries to tell White Josh and Hector about Rebecca; however, they don't believe him as she submits an article about him to a news blog, exclaiming that he hates gay people and is racist, among other things. Josh retaliates by using the file Trent gave him, and he and Father Brah call Paula to tell her about what is in the file. Rebecca figures out what is happening and tries to persuade Nathaniel to take her to Rome; as they try to leave, Paula, Heather, and Valencia come through the door and stop her from leaving.

Rebecca tries to get Nathaniel to ignore Paula and take her to Rome; however, Paula stops her and tells her they are trying to help - Rebecca, feeling threatened, lashes out at everyone there and runs off. She goes to Josh's house and harasses him, before going to a bar, defeated. She rents a room at a youth hostel with a Danish roommate, Yarl, who she rants her insecurities to. The next day, she kidnaps Josh's mother and takes her to a theme park. Josh finds out and goes to get his mother back. Paula asks Valencia and Heather if she is a bad mother, while Darryl tries to talk to White Josh about if he wants a baby. Rebecca, defeated, goes to a bar and receives a butt-dial from Greg, and ends up sleeping with his dad. Paula reaches out to Rebecca's mom.

Rebecca goes home to see her mother as she feels there is nothing for her in West Covina anymore. Her mother finds out she is researching ways to kill herself and slips Rebecca anti-anxiety medication without her consent. Nathaniel goes to Rebecca's apartment and finds all her things being taken to a storage unit in Westchester, which he takes at his advantage to instantly hire a replacement, Cornelia (Bayne Gibby), and Darryl, Jim, and Maya project their issues with Rebecca onto her, and harass her. Paula takes a vacation with her family to a resort, which is ruined when Nathaniel and Cornelia show up, shortly followed after by the others. Rebecca finds out about her mother drugging her and leaves to go back to California. While she is on the plane, she realizes she doesn't want to return to West Covina, and all of her problems and thoughts build up, leading her to overdose on her mothers medication.

Rebecca, in hospital, begins recovering from her suicide attempt. Paula runs in to check on her, while Heather, Valencia, and Hector wait in the waiting room. Valencia blogs Rebecca's recovery and begins to turn it about herself, which annoys Heather. Josh shows up to check if Rebecca's alright, and is thrown out by the others. Nathaniel tries to deal with what happened by seeing his family, and tries to deal with his mother's own suicide attempt. The hospital psychiatrist diagnoses Rebecca with Borderline personality disorder; Rebecca takes this to Dr. Akopian to dispute the diagnosis before realising it fits her perfectly. Nathaniel returns and gives Rebecca roses from his mother, while Darryl returns from a yurt with sunburn. He proclaims how he could kill Josh for what he did to her but Rebecca says it isn't about Josh and maybe never was; Josh overhears this from outside and leaves without wishing Rebecca well.

Paula goes to Buffalo to help her dad while her mom is out of town; Rebecca tags along and forms a bond with Paula's dad. While grocery shopping, Paula bumps into her ex, Jeff Chanington, and the two catch up. Rebecca and Paula's dad get drunk, and Rebecca starts to sext Nathaniel. Josh gets a job at Home Base and starts to flirt with a customer, until he gets a zit on his chin, which evolves into a staph infection. Madison pressures Darryl into breaking up with White Josh.

Paula and Darryl begin their search for an egg donor. Paula believes she has found the perfect candidate, and stalks her into releasing her eggs to Darryl; however, she blackmails Paula into giving her money. Rebecca's obsession turns from Josh to Nathaniel, and she goes to her therapist for advice. Rebecca dives into Nathaniel's childhood and ropes George into helping her track down his father's affair - they follow Nathaniel's dad to a house where they find him with a girl who they suspect is Nathaniel's sister. Rebecca goes to extreme lengths to get the two to meet, when it turns out that the girl's mother is Nathaniel's dad's secretary and he is helping pay for her tuition. Darryl's fertilisation is unsuccessful, leading Darryl to check if his sperm still is capable of producing a child.

Nathaniel and White Josh form an alliance at Home Base after both being dumped by Rebecca and Darryl. The two try to exercise their pain away, after they finish working out, they go to a gay bar. They get angered by a group of girls on a bachelorette party, who proclaim men with abs don't have problems. Rebecca persuades Valencia to let her tag along with her to her new clients engagement party. Darryl's second fertilisation attempt fails, leaving him defeated as he won't have enough money for another year to try again. Rebecca offers to donate her egg to Darryl.

Rebecca is rejected by Nathaniel for getting her job back, which leads her to go find Darryl's ex-wife and reclaim her shares in the law firm. She is successful and becomes a name partner at Whitefeather. Kevin enrolls Heather in a diversity training program, where she becomes the manager of Home Base. Rebecca orders a hit on Nathaniel's new girlfriend. Heather offers to be the surrogate for Rebecca and Darryl's child.

Rebecca and Nathaniel continually have sex behind Nathaniel's girlfriend's back. Paula finds out she is the office bitch and asks Sunil to come in and help her; however, she is the same with Sunil, which makes him turn on Paula with Tim, Maya and Jim. Heather realizes the limits of what she can do now she is pregnant. The timeline jumps forward eight months; Heather is heavily pregnant, Valencia has a girlfriend, Rebecca and Nathaniel are still having their affair, and White Josh is back from volunteering in Mexico. Paula figures out her actions and apologizes to Sunil for being cruel towards him. Rebecca breaks off her affair with Nathaniel.

As soon as Rebecca begins to feel she is in control of her life, Trent appears and threatens to blackmail her into being his girlfriend - again. Rebecca asks Paula for her help finding out what Trent is hiding. Paula refuses, so Rebecca lies to her and tells her that Trent has dirt on her as well. They find a storage locker full of photos of Rebecca and some of her possessions. They open a hidden crate and get blasted with green slime. Rebecca returns home and Trent tells her she failed his 'love test', and Rebecca yells at him that she will never love him, and he leaves her home. Meanwhile, Valencia and Beth host a birthday party for a teenage girl with Josh as the DJ, which goes terribly wrong until Valencia allows Josh to play recent music. Nathaniel asks Mona to move in with him after seeing Rebecca and Trent and believing they were a couple.

Rebecca is haunted with visions of Trent, which she takes to her BPD support group, who figure out that the visions are a manifestation of her guilt. This leads Rebecca to tell Josh, Paula, and Nathaniel all the bad things she has done regarding them. Paula becomes visibly upset and tells Rebecca they are done for good. She once again sees Trent in an elevator; however, it turns out to be him, and he threatens Rebecca. Meanwhile, Heather goes into labor and Darryl rambles to her. She sees that he misses White Josh and invites him to the hospital to reconcile with Darryl. The two agree to be friends. Trent sneaks into Nathaniel and Mona's housewarming party and sends Rebecca several Instagram stories threatening to murder Nathaniel. Rebecca rushes to the party and pushes Trent off the roof, which puts him in a full body cast. Rebecca is arrested and charged with attempted second degree murder. Nathaniel appears as her lawyer and tells her to plead insane. She takes his advice on board, but as soon as she sees Paula, she changes her mind and decides to face the consequences of her actions and pleads guilty.