Teen Mom 2

Tempers flare between Jenelle and her mother when partying interferes with parenting, Leah graduates from high school, Kailyn copes with her breakup, and Chelsea tries dating again.

Leah makes an important doctor's appointment for Ali, Chelsea's ex comes back into her life, Kailyn starts over with a new boyfriend, and Jenelle finds herself in a custody battle.

Kailyn must choose between her new boyfriend and Jo's family, Janelle makes a decision about custody, Leah is concerned with Ali's health, and Chelsea and Adam try to work out their issues.

Chelsea is torn between Adam and her father, Kailyn struggles to pay her college tuition, Jenelle has a new man in her life, and Leah moves in to her new house.

Things get rough between Jenelle and her mother, Leah reconsiders her academic goals, Adam moves in with Chelsea, and Kailyn searches for a new place to stay.

Leah worries about Ali's health, Kailyn moves back in with Jo and his family, tensions rise between Adam and Megan, and Jenelle celebrates Jace's first birthday.

Kailyn and Jo struggle to get along, Jenelle and Kieffer go job hunting, Chelsea focuses on her schoolwork, and Leah gets unexpected news about Ali.

Chelsea worries that Adam will cheat again, Jenelle and Kieffer move in with her mother, Kailyn hides a secret relationship from Jo and his family, and Leah prepares for Ali's MRI.

Jenelle and Kieffer take off on a road trip together, Leah gets the results of Ali's MRI, Chelsea and Adam's relationship falls apart, and Kailyn and Jo's drama hits an all-time high.

Kailyn makes a new start, Leah has second thoughts about her wedding, Chelsea celebrates her birthday, and Jenelle and Kieffer spend time in New Jersey on her mother's dime.

Chelsea learns the extent of Adam's legal issues, things start to fall apart for Jenelle, Leah prepares for her upcoming wedding, and Kailyn balances college with raising Isaac.

Chelsea plans for Aubree's birthday, while her dad tries to keep Adam from coming. Jenelle is arrested for breaking and entering and sees kieffer is a bad influence. Kailyn signs a custody agreement, Leah and Corey get married.

The cast gathers together for a special finale reunion hosted by Dr. Drew, where the teen moms discuss what happened this past season and what they've learned from their experiences.

Dr. Drew hosts a look back at some unseen moments of the four teen moms and their families that didn't make the cut.

Gear up for the second edition of Teen Mom with a look back at the four moms' most emotional moments from 16 & Pregnant and a sneak peek at what's to come in their parenthood journey.