Kailyn and Jo begin co-parenting therapy, and she informs him of her marriage to Javi. Leah deals with Ali's unexplainable health issues and brings her to a neuromuscular specialist to see if they can help. Aubree has two parties for her third birthday, one thrown by Chelsea and another by Adam. Jenelle is depressed over financial and custody issues, and, at the encouragement of Kieffer, takes solace in drugs.