Jenelle files for full custody of Jace; and squares off with Barb. In other events, Kailyn and Javi's marital problems follow her to L.A. ; and Chelsea and Taylor's custody hearings with Adam intensify

Nathan is arrested after a physical altercation with Jenelle; Leah reaches her breaking point after receiving divorce papers; Chelsea and Adam face each other in court; Kailyn takes a vacation for her birthday.

Leah must return from therapy; Jenelle and Nathan struggle to co-parent; Kailyn and Javi adjust to Jo and Vee living close.

Jenelle may face felony charges after a fight with Nathan and his new girlfriend; Chelsea notices Adam's actions are impacting Aubree; Kailyn is beside herself when Jo goes missing; and Leah ends her marriage.