Corey and Jeremy have a heart-to-heart, and Corey struggles with whether to pursue things with Leah in the wake of her break up with Jeremy. Jenelle and Kieffer are back together, and Jenelle decides to get breast implant surgery. Kailyn tries to bring Jo to court to change their custody agreement, but the judge sides against her. Chelsea gets back on birth control in order to avoid another pregnancy scare.