The family gathers to see Amy get married, but a surprising confrontation could derail the biggest day of Amy's life. Amy and Brian's first dance doesn't quite go according to plan, and an unexpected person catches the bouquet.

Amy goes under the knife less than 2 weeks before her wedding. Tammy's back on the fence when it comes to attending Amy's wedding. Amy and Brian's wedding rehearsal goes anything but smooth.

The family finishes out their New Orleans vacation with a surprise bachelorette party for Amy. Faced with losing Andrea, Tammy seeks help. Amy reveals her plans to go under the knife just weeks before her wedding.

Amy gets some unexpected news from the eye doctor. The family heads to New Orleans and Amy is left speechless when they spring a surprise on her. Andrea tries to find a solution for Tammy's unraveling mental state.

Amy pursues her dream of being an artist. Chris hopes a vacation will unite the family. Tammy says something completely unexpected to Amy at her birthday party.

After peace talks between Tammy and Amy go south, the sisters are more divided than ever. Amy and Brian try pre-martial counseling. Billy attempts to work on a ceasefire between the sisters, but Tammy spirals out of control.

Amy moves ahead with securing wedding details, sans Tammy. Chris and Misty worry about Amy's health. Andrea attempts to broker peace between Tammy and Amy and bring them together for the first time in weeks.

Chris hosts a BBQ to celebrate Brittany's weight loss but is overshadowed by Amy's maid of honor reveal. Tammy and Amy's relationship takes a turn.

Amy makes a big decision for the wedding and Chris tries to orchestrate peace between Tammy and Amy.

Amy and Tammy have drifted further than ever, but unbeknownst to them, are living parallel lives as their romantic partnerships both take big steps.