Teen Mom

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.

Cate and Tyler plan a party to reveal the gender of their baby. Maci struggles with the fact that Bentley is starting kindergarten. Gary invites Amber to be a part of 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.

Cate finds out Brandon and Teresa want to discuss adoption issues with them. Maci reveals that she and Taylor are expecting a baby. Amber is shocked to find out that Gary is having a baby with Kristina.

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 being 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 surprises the crew with her return to the series but has some conditions regarding Bentley. Catelynn and Tyler struggle with being first time parents. Farrah introduces Simon to her mom

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

Tyler puts pressure on Cate to lose her pregnancy weight. Things boil over between Amber and Matt in Vegas. Maci worries about Bentley's safety while in Ryan's care and Debra attempts to go into business with Farrah.

Amber's family questions Matt's intentions when his past is revealed. Catelynn leaves Nova under April's care. Maci and Taylor find their dream home. Simon meets Sophia and Farrah pressures him for an engagement.

Dr. Drew sits down with the cast of Teen Mom OG in front of a studio audience, and chats with Maci about her decision to pull Bentley off the show. Amber and Matt discuss their age difference.

In part two, Catelynn has an adorable surprise for Teresa, and Farrah discusses all of the drama that surrounded her return to the show.The four moms finally get serious and unpack the conflict between them.

Dr. Drew and the girls take a look at never-before-seen footage and share the behind-the-scenes secrets from Teen Mom OG.

For the first time "Teen Mom OG" will break the fourth wall, pulling back the curtain to reveal their relationships with the producers and crew, the challenges of raising children on camera, and how life in the public eye has shaped them as parents and people. Each episode will give an unprecedented look into these young mothers' lives and how they're facing the responsibilities of parenthood as their children enter kindergarten, start little league and reach other milestones of youth.

Catch up with original girls who started it all and relive Catelynn, Maci, and Amber's journeys as they navigate being 16 and pregnant to the Teen Mom's they are today.