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Chelsea Houska, Jenelle Evans, Kailyn Lowry and Leah Messer return for a seventh season of MTV's "Teen Mom 2" docuseries. MTV

Get ready for some more momma drama. On Monday, MTV will premiere the seventh season of “Teen Mom 2.” When viewers last saw leads Kailyn Lowry, Jenelle Evans, Leah Messer and Chelsea Houska they were working through big life changes, ranging from arrests, to anxiety issues, custody battles and more. Being that Season 6, episode 12 aired over five months ago, take a look back at what went down in the 2015 finale, titled “Face Off.”

Leah

After 30 days in treatment for anxiety and depression, Leah returns home to her three girls. Leah’s ex-husband, Jeremy Calvert, brings their daughter Adalynn to pick her up at the airport. When Leah goes to pick up twins Ali and Aleah, whom she shares with ex-husband Corey Simms, she says it was awkward. Leah tells her friends she realizes they will need to work out their issues with custody.

Leah said going to treatment was a move in the right direction as she's learned she had to take care of herself so she can better care for her children. Leah reveals that while she was away, she’s also finalized her divorce from Jeremy and was granted fully custody of Adalynn. She says Jeremy, unlike Corey, was helpful while she was away. Leah says she tried to call her daughters but Corey never answered.

After settling into a new home, Leah reveals she wants to talk to Corey one-on-one so they can get back to having a healthy co-parenting relationship. Leah worries about their meeting because the last time they spoke he was convinced she was a drug addict. She makes it clear she does not want Corey's wife Miranda present.

When Corey tells Miranda about Leah's request, both she and Corey are not pleased. Miranda comments Leah can't “fool” everybody by going to treatment, saying "a cheetah doesn’t change its spots."

Watch Leah get cold feet:

When Leah arrives to the meeting, she notices Miranda is present and refuses to talk to Corey. “If he can’t talk to me for our children then I’m not doing it. I’m not going to be put in another situation where I’m ganged up on,” Leah says.

Chelsea

After welcoming a pet pig into their family, Cole DeBoer and Chelsea decide to move in together. Cole says he’s excited about the change and Chelsea says she’s hopeful her and her boyfriend will stay together forever.

Later on, Chelsea complains to a female pal about her ex Adam Lind's parenting skills. Chelsea says that Adam did not spend time with Aubree on Father's Day, despite having time with her, and that Aubree said she wished her dad was “like Cole" after that fact. Chelsea admits Aubree's comment made her sad and happy at the same time.

Watch Cole move in with Chelsea:

When Cole finally moves in, Chelsea's excited about their cohabitation. Aubree is equally thrilled, cuddling up to him after he settles in and declaring, “he’s mine.” Aubree gives Cole one rule to live by: he must put the toilet seat down.

Jenelle

Jenelle turns herself in on domestic violence charges after getting into an altercation with her ex Nathan Griffith. Jenelle’s friend bails her out and reveals Nathan wants to get back together with her. Jenelle says she doesn’t want anything to do with him. Jenelle also reveals she's upset Nathan got her arrested and is now dating another woman.

Jenelle ends up not having to attend her domestic violence trial and has the charges dropped.

During a sit down, Nathan tells Jenelle he never pressed charges — he says he only sought out a temporary restraining order — and that still cares for her but they need a “game plan” to stop the violence. When Nathan calls his new girlfriend “awesome," Jenelle questions who was watching Kaiser while he was at the police station. After Jenelle asks if the woman was watching their son during the ordeal, Nathan storms out.

Watch Jenelle and Nathan try to work out their differences:

Jenelle meets up with her mom Barbara, who has custody of her son Jace, and says its good they're getting along because she need her support with Nathan out of the picture. Barbara tells Jenelle she wants to keep their relationship close, for them and for Jace. When the topic of custody comes up, Barbara tells Jenelle they should hold off on their court battle over Jace for now. Barbara says she just wants to do what’s best for Jace and tells Jenelle her life isn’t in a stable place right now. Jenelle thanks Barbara for everything she’s done for Jace over the years and says she realizes her son would be a in foster home if it wasn’t for her decision to step up.

Kailyn

After Isaac's father Jo Rivera fails to attend his moving up ceremony, Kailyn says she no longer wants to work out a child support agreement with him outside of court. When Kailyn confronts Jo, he says he was unaware of the event. After Jo notes that going through the court system will not leave him without enough money to take care of himself and his son (not to mention his girlfriend and unborn child) Kailyn suggests he get a day job. Jo responds by complaining he won't have time to spend with Isaac if he does. Kailyn says she feels like she has to go through the courts.

Watch Kailyn and Jo's fight below:

At home, Kailyn's husband Javi Marroquin says she does not owe her ex anything and that Jo needs to get a job. Javi goes on to call Jo “lazy” and “cheap.”

Jo's girlfriend Vi gets upset when she learns that Kailyn wants to ask for child support through the court system. Jo says what Kailyn is doing is pure “greed and selfishness." Jo adds that he’s worried for Isaac, Vi and their baby’s future.

The "Teen Mom 2" Season 7 premiere airs Monday at 10 p.m. EDT on MTV.