In the season premiere, Morgan's bridezilla ways push Brendan past his limit as they plan their wedding. While Morgan's preoccupied with her wedding, Dorothy leans on her friend Bianca for support when Dorothy has trouble with her boyfriend. EJ gets his own place in LA and must figure out what he wants to do with his life. Jonny's world is rocked by a health scare.

Morgan makes the big announcement of whom she has chosen to be a part of her bridal party. Even though Dorothy is included in this prestigious group, she bails on wedding activities and jets off to NYC with her adventure buddy Bianca, which infuriates Morgan. EJ explores the wonderful world of dating by taking a tantra class and having a live streaming pillow talk on Periscope. Meanwhile, Jonny turns up the volume and takes the first steps of becoming a DJ.

EJ takes Dorothy up on her offer to help him find love and they start by hunting for eligible men on the streets of Rodeo Drive. Morgan apologizes for her bridezilla ways but new issues arise as she and Brendan realize they aren't on the same page financially. Meanwhile, Bianca, lets Dorothy and Jonny in on a little secret about a family fallout between her and Brendan, which infuriates Morgan leading to a showdown at Jonny's first DJ event.

Morgan and Brendan learn that their wedding date may be doomed. EJ decides to begin creating his own business empire while also giving back to the LGBT community. Dorothy takes everyone to Vegas to celebrate her birthday, where Morgan confronts Bianca about her nasty comments regarding Brendan and her wedding. Meanwhile, Dorothy becomes frustrated by Bianca's diva behavior and the two come to blows.

Morgan's career goals clash with her wedding planning duties after she secures an important meeting with a bestselling author...in New York City. Morgan attends Jonny's DJ show at the Highline Ballroom, where she clashes with Bianca. Meanwhile, back in LA, Brendan picks up the wedding planning slack and realizes that the stories Morgan is writing about in her book might be too scandalous for a young couple embarking on their married life together. EJ throws a glitzy launch party for his signature nail polish shade, Jaded.

While on his bachelor party in Cabo, Brendan confides in Jonny and struggles with Morgan's decision to write a book revealing her wild past. EJ sits front row at New York Fashion Week and wonders if a career in fashion means a move to New York. Dorothy's world is turned upside-down when Bianca reveals that Morgan isn't the friend Dorothy thought she was.

Dorothy doesn't know if she wants to be a bridesmaid for Morgan anymore, after Bianca revealed what Morgan said about her. It's fun and games at Morgan's bachelorette party in Miami, until Dorothy confronts Morgan. Bianca flies to Miami to support Dorothy and gets into a massive blowout with Morgan.

In the season finale, the threat of rain on their wedding day causes a fight between Brendan and Morgan as Morgan begins to question married life. As her wedding excitement turns to doubt, Morgan escapes to NYC with EJ just days before the big day. Dorothy and Bianca's relationship troubles come to a head at Jonny's birthday.