Kailyn struggles to explain Javi's absence to Isaac and elswhere, Adam is arrested on Teen Mom 2.
Jenelle starts the divorce process, Kailyn's mom turns back up and Chelsea faces off with Adam on Teen Mom 2.
When Javi heads off on a trip for work, Kailyn becomes lonely. Nathan and Jenelle reunite while Leah and Jeremy see Ali's specialist on Teen Mom 2.
Jeremy and Leah argue over money, Kailyn celebrates her birthday and Jenelle struggles with Jace on Teen Mom 2.
Chelsea sits down with an attorney, Leah starts taking medication for her anxiety, and Kailyn and Javi visit Joe and Vee on Teen Mom 2.
It's Isaac's birthday and Kailyn invites Jo and Vee to the party while Chelsea moves into her new home on Teen Mom 2.
Jenelle learns the sex of her baby while Kailyn struggles to keep her marriage together and Chelsea gets unexpected news on Teen Mom 2.
Leah figures out what has caused Ali's muscular dystrophy, Javi goes back to work and Jo gets a new apartment on Teen Mom 2.
Nathan gets arrested and Kailyn's baby is born on Teen Mom 2.
Javi takes Issac over to Jo's. Jenelle and Nathan get exciting news. Ali tests out her new wheelchair on Teen Mom 2.
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