Cate and Tyler find out they are pregnant so Cate wants to get married in a courthouse. Maci struggles co-parenting with Ryan. Amber falls for Gary's flirting, but then is crushed when he goes on a family vacation with his new girlfriend and Leah.

Catelynn and Tyler plan a party to go public with their baby's gender. Maci has a hard time believing Bentley is starting kindergarten. Gary asks Amber to help out with Leah's first day of kindergarten.

Tyler posts a video of Carly on their fan page which upsets Brandon and Teresa. Maci continues struggling to communicate with Ryan about co-parenting. Amber is extremely hurt by Gary because he won't let Leah spend the night.

Catelynn learns that Brandon and Teresa want to discuss adoption issues. Maci reveals that she and Taylor are expecting a baby. Amber discovers that Gary and Kristina are also expecting a baby of their own.

Cate and Tyler meet with Brandon and Teresa. Maci tells Ryan and his family she's having a baby with Taylor. Amber confronts Gary about his flirting. Farrah is hurt after not bring a part of the season from the beginning.

Cate finds out she has gestational diabetes. Farrah struggles with her mom's visit. Amber reveals her relationship with her boyfriend and Maci quits the show when she finds out Farrah is back.

Maci returns to the series, but has conditions regarding Bentley. Catelynn and Tyler struggle with being first time parents and they get a special gift from Teresa. Farrah introduces her boyfriend Simon to her mother. Matt proposes to Amber.

Amber, Farrah, Maci and Cate come together in New York to do press for the show. The tension between Farrah and the rest of the girls comes to a head when Farrah discovers that Maci had quit the series because of her.