Teen Mom 2

Jenelle finds out she's pregnant and decides to terminate her pregnancy. Kailyn has her baby shower. Leah struggles with Ali's medical diagnosis. Chelsea deals with Adam having another baby.

Jenelle recovers from her abortion and meets a new guy. Chelsea has her first day of Esthetician School. Kailyn and Jo fight about her move to Delaware. Leah goes on vacation but argues with Jeremy about his upcoming job.

Leah learns that Ali will need to use a wheelchair. Jo and Kailyn fight about Isaac's scheduled drop off because Jo is late. Jenelle and her new boyfriend Nathan decide to move in together.

Jenelle moves in with Nathan in Myrtle Beach. Chelsea invites Adam to go with her to pick Aubree up from her first day of pre-school. Kailyn and Javi put an offer on a house in Delaware.

Jenelle and Nathan decide to have a baby together. Kailyn starts preparing for her wedding and she and Javi move into their new home. Corey comes to terms with Ali's wheelchair. Chelsea decides to celebrate turning 22.

Chelsea throws Aubree's 4th birthday party. Kailyn and Jo go to court. Jenelle and Nathan get excited when they think they're pregnant. Jeremy returns home to Leah and the girls after passing out at work unexpectedly.

Kailyn is overwhelmed and has a major meltdown. Leah and Jeremy meet with Corey and his wife to discuss Ali starting school early. Aubree meets Adam's new baby. Jenelle's lawyer tells her a plea bargin may be possible.

Chelsea gets upset when Adam sends her a visitation request. Barbara and Nathan have a major blowout after Jenelle has an unexpected surgery. Leah and Corey come together to support Ali on her first day of school.

Chelsea takes Aubree to her first dance class. Jeremy and Leah argue about Jeremy leaving for work. Jenelle and Barbara argue about Barb's blowout with Nathan. Kailyn breaks down when she realizes her mom won't be at her wedding.

Kailyn and Javi finally celebrate their wedding. Chelsea finally graduates esthetician school and lands a job. Jenelle accepts a plea that puts her on supervised probation. Jeremy decline a local job causing a big fight with Leah.

Javi takes Isaac to Jo's for the first time.Adam responds to Chelsea's visitation objection.Ali tests out her wheelchair while Leah continues to struggle with Jeremy being away.Jenelle and Nathan recieve some exciting news.

Kailyn's baby is born but she's unsure about her mom coming. Chelsea struggles with the new visitation agreement. Leah and Jeremy work on their relationship. Jenelle is pregnant but things are on edge after Nathan's DUI arrest,

Javi goes back to work, leaving Kailyn with the kids. Jo moves to a new apartment. Jenelle worries as things with Nathan worsen. Chelsea hears some major news about Adam. Leah discovers the cause of Ali's muscular dystrophy.

Dr. Drew hosts the cast of Teen Mom 2 in front of a live studio audience. He talks to Leah about Ali's illness and her marriage. Kailyn talks about her wedding and asks for help to finally get Javi and Jo on the same page.

Dr. Drew examines Chelsea's relationship with Adam now that he has a new baby and wants more time with Aubrey. Jenelle discusses her abortion, her pregnancy, her criminal charges, and her turbulent relationship with Nathan.

In this 90-minute special, Dr. Drew and the girls will dish on never-before-seen moments and give viewers a special behind the scenes look at "Teen Mom 2."

We catch up with Kailyn, Leah, Jenelle and Chelsea's stories from Teen Mom 2 Season 4 and lead up to the premiere of the new season.