`Teen Mom 2' follows four girls from the second season of MTV's documentary series `16 and Pregnant' as they face the challenges of their first years of motherhood. Chelsea, Jenelle, Kailyn and Leah are seen trying to come to grips with the myriad of responsibilities that caring for a child brings, and doing so while worrying about such things as finances, living arrangements, graduating from high school, family support (or lack thereof) and the role of their baby's father.
Jenelle returns to discuss her final season of TM2, Kail and Vee look back at their tumultuous past, Briana calls out Devoin, and Chelsea opens up about her post-partum issues. (S9, ep22)
Chelsea, Leah, Kail, Briana, and Jade sit down to unpack this season. Chelsea reveals to the other mums why she is leaving the show while Leah's ex-husbands address their contentious relationship.
Kail & Leah reveal what happened behind the scenes in Hawaii and Briana has an emotional heart to heart with John. Later, Jade triggers her mom when she is confronted about her arrest. (S9, ep38)
Chelsea and Cole take centre stage to talk marriage highs and lows, with special guests Cate and Ty from Teen Mom OG. Kail reveals how she really felt about Jade joining the TM2 cast. (S9, ep39)
Kailyn comes face to face with Javi's pregnant girlfriend. Chelsea readies Aubree for her first visit with Adam at the Center. Briana tells DeVoin to move out. Jenelle and Nathan square off. (S9, ep2)
Briana invites Luis to Stella's first birthday, but he has other plans. Chelsea waits for Adam to schedule another visit with Aubree. Isaac visits Javi's house. (S9, ep4)
Jenelle faces Hurricane Florence and makes an emergency call about her husband. Kailyn's birthday party for Lux pushes her to reconnect with estranged family. Devoin and Nova get closer. (S9, ep5)
Jenelle addresses rumours spurred by the 911 call. Kailyn's sister shares major news. Briana visits a new beau in New York. Leah takes Ali to another important doctor's appointment. (S9, ep6)
Chelsea finally meets her new baby girl. Jenelle avoids filming, causing concern. Kailyn tries to maintain a long-distance relationship with her sister. Briana's new flame visits Florida. (S9, ep7)
Stella needs emergency surgery. Leah approaches her breaking point with Jeremy over Addie. Chelsea and Cole bring Layne home. Jenelle struggles with David's absence on the show. (S9, ep8)
Chelsea receives surprising news about Adam's other daughter. Briana takes initiative and files for child support. Jenelle and Nathan's court hearing is postponed. (S9, ep9)
Jenelle needs emergency surgery. Briana confronts Luis in New York. Kail and Jo come face-to-face for the first time since he filed for child support. (S9, ep10)
Barb plans her trip to meet with Jace's dad, causing Jenelle anxiety. Impressed with DeVoin's improvement, Briana considers making a big change. Chelsea plans one-on-one time with Aubree. (S9, ep11)
Barbara flies to New York to meet with Jace's dad. Adam's parents break the rules of their custody agreement. Lux's dad surprises Kailyn at Lincoln's birthday party after a big fight. (S9, ep12)
Lincoln gets a new brother while Kail offers Jenelle a peace offering; but her good deed backfires. Chelsea is forced to confront Adam's parents about continuing their visits with Aubree. (S9, ep13)
Kail launches her haircare line with a big party in NYC, and a few surprise guests show up. Things don't go well for Luis when Briana lets him see Stella. (S9, ep14)
Kail gets a call from Jo's wife about their child support battle. Nathan and Jenelle go back to court, with a surprising turn. Chelsea throws Aubree a belated birthday celebration. (S9, ep15)
Barb and Jenelle have a wild weekend in Atlanta, but things go too far when she brings up another cast member. Kail and Jo celebrate Isaac's birthday together. (S9, ep16)
Leah's girls reveal their true feelings about Jason. Chelsea takes a family vacation, but comes home to a shocking find. Jenelle tries to defend her family on social media. (S9, ep17)
Leah breaks up with Jason. Jenelle's plans to take Jace on a trip go awry. Briana leaves Luis alone with Stella for the first time. Kailyn gets child support advice from TMOG's Amber. (S9, ep18)
Chelsea suffers a panic attack. Jenelle visits Briana in Orlando but struggles to film without her husband. Addie is confused about Leah and Jeremy's relationship. (S9, ep19)
Leah and Jeremy rush Addie to the ER. Jenelle questions her future with Teen Mom 2. Briana lets DeVoin take a major step forward with Nova. Chelsea debates how to treat her anxiety. (S9, ep20)
Jade joins the cast of Teen Mom 2 but trust issues threaten an important anniversary with Sean. When Briana allows Devoin to take Nova for the weekend, he disappoints her in a big way. (S9, ep25)
Briana confronts Devoin in New York. Jade tries to smooth things over with Sean before moving into their new house. Leah and Kailyn vacation together in Costa Rica. (S9, ep26)
Dr. Drew and Nessa begin the biggest reunion ever by chatting with each of the moms, but conflict between Jenelle & Nessa leads to major drama. (S9, ep21)
Leah faces another health scare with Addie. Jade and Sean reach boiling point, forcing her to move out. Briana is torn when she gets a suspicious DM about John. Adam surprises Aubree. (S9, ep27)
Kailyn announces the newest member of the Teen Mom 2 cast. Jace's dad, Andrew, makes an appearance for the first time since the first Teen Mom 2 Reunion. (S9, ep23)
Briana celebrates Stella's birthday, Jade grows frustrated with her mother, Leah's daughters have mixed feelings about Jeremy, and Chelsea gets a creative opportunity. (S9, ep31)
Jade's relationship with her mum deteriorates. Things for Briana and John crumble when she visits him. Ali gains independence at a camp for children with muscular dystrophy. (S9, ep32)
When Jade's parents are arrested, she's forced to pick up the pieces. Devoin tries to prove to Briana that he can be around for Nova. Leah welcomes Ali home from camp. (S9, ep33)
Briana makes a major decision, leaving John sidelined. With her parents still in jail, Jade reaches to Sean for support. Chelsea's anxiety rises with the launch of her clothing design. (S9, ep34)
Luis reappears with a major ask for Briana. Sean's rent is late, forcing Jade to make a difficult choice. Kailyn gets upsetting news. Chelsea celebrates Aubree's 10th birthday. (S9, ep35)
Kailyn and her boys say goodbye to the family dog. Briana confronts John about their relationship. Chelsea gets a shocking request from Adam's mum. Leah is reminded of her past with Jeremy. (S9, ep36)