For four seasons fans of `Teen Mom' watched Farrah, Maci, Amber and Catelynn face multiple challenges in their first years of motherhood, including such things as graduating from high school, relationships, getting jobs, beginning college and moving out on their own. Oh, and raising their first child. Now the original girls - hence, the `OG' in the revived series title - return to reveal the challenges of raising children on camera, and how life in the public eye has shaped them as parents and people. It's an unprecedented view of young mothers facing the responsibilities of parenthood as their children enter kindergarten, start little league and reach other milestones of youth.
Amber and Gary finally settle their custody dispute over Leah. Farrah plans a move to LA, but questions her relationship with Simon. Catelynn and Tyler debate having another baby. (S6, ep1)
Farrah's mom confronts Simon. Amber deals with the latest rumour about Matt. Catelynn's depression comes back, and she turns to Dr Drew for help. A newly engaged Maci gets another shock. (S6, ep2)
Maci and Taylor find out she's further along in her unexpected pregnancy than they thought. Matt takes Amber to his hometown where she meets one of his family members. (S6, ep3)
Maci and Taylor plan their wedding. Leah is hurt after Amber misses a visit with her. Farrah invites Simon to celebrate Easter with her family. (S6, ep4)
Catelynn and Tyler have an emotional goodbye as she heads to a treatment facility for her anxiety and depression. Maci and Taylor buy a bigger house to fit their growing needs. (S6, ep5)
Maci and Taylor question their decision to have their wedding so soon, while Farrah and Simon get some relationship advice. Catelynn is homesick so Tyler and Nova pay her a visit. (S6, ep6)
Maci is worried because Ryan isn't around for Bentley, Farrah makes a big move to LA, and Amber and Matt get ready for Leah to stay at their new house. (S6, ep7)
Maci and Taylor welcome their third child but still worry that Ryan isn't showing up enough for Bentley. Gary tries to co-parent with Amber but realises there's still tension between them. (S6, ep8)
Amber worries she's developed a new addiction to food. Farrah decides to open a frozen yogurt shop, while Tyler's concerned that Catelynn is falling back into bad habits. (S6, ep9)
Amber and Gary get ready for Leah's first day of school, while Catelynn continues to struggle with her anxiety. Ryan takes Bentley for the weekend, though Maci isn't convinced he's changed. (S6, ep10)
Amber and Matt attempt to put a stop to the tabloid rumours surrounding them, but are sidetracked by a visit from Matt's son. Tyler and Catelynn celebrate Butch's first year out of prison. (S6, ep11)
In an attempt to keep Matt's son sober, Amber and Matt invite him to move in. Catelynn and Tyler attempt to celebrate their first year of marriage, but are worried about Carly. (S6, ep12)
Farrah and her mother uncover old family wounds and get into a huge fight. Matt is offered the opportunity to write a book about his life, and Maci and Taylor head to Las Vegas. (S6, ep13)
Gary asks Amber for help with Leah when Kristina has an emergency. Maci gets to know Ryan's new girlfriend, while Catelynn and Tyler discover they're not ready to move into their new home. (S6, ep14)
Amber undergoes plastic surgery in an attempt to relieve her negative self-image issues, while Farrah and her mum try to reconcile their differences after an awkward encounter. (S6, ep15)
Maci and Ryan try to coordinate trick or treating with Bentley. Amber is excited about her new business venture but is let down when Gary doesn't let Leah stay with her on a school night. (S6, ep16)
Tyler's less optimistic than usual when his dad is once again released from prison. Farrah and Simon consider the status of their relationship. Maci throws Bentley a birthday party. (S6, ep17)
Catelynn and Tyler celebrate Nova's birthday and consider having another baby, while Farrah makes a decision about her and Sophia's future. Amber and Gary throw Leah a birthday party. (S6, ep18)
Amber continues to be frustrated that she doesn't have Leah as much as she wants, while Ryan's girlfriend encourages him to communicate more with Maci about Bentley's schedule. (S6, ep19)
Maci confides in Ryan's fiance about her co-parenting issues, while Amber plans a fashion show to promote her boutique. Catelynn and Tyler face up to their different parenting styles. (S6, ep20)
Tyler decides to be more optimistic about Butch while Farrah questions her mum's relationship with her fiance. Ryan's family finds out something that Maci's been keeping from them. (S6, ep21)
Maci is worried about Ryan's extracurricular activities while Catelynn and Tyler start an online children's boutique. Farrah bonds with her mum while Amber and Matt almost elope. (S6, ep22)
The mums and their significant others travel to Puerto Rico where Maci struggles with wanting to help Ryan overcome his issues. Farrah is invited to speak about her businesses at SXSW. (S6, ep23)
Maci and Taylor work on their marriage in counselling while Farrah goes on a date with Asaf whom she picked on the aftershow. Gary asks Amber to help him surprise Leah with a new house. (S6, ep24)
Catelynn and Tyler sign Nova up for daycare while Maci throws a surprise birthday party for Taylor. Simon tries to get over Farrah while Amber and Matt settle on a wedding venue. (S6, ep25)
Amber celebrates Easter but is disappointed when another scandal comes out about Matt. Catelynn and Tyler find their dream home while Farrah makes an effort to get to know her mum's fiance. (S6, ep26)
While on vacation in Key West, Farrah and her mum's fiance argue over their lack of respect for each other. Catelynn and Tyler's offer on their dream home is accepted. Maci confronts Ryan. (S6, ep27)