Mitchell tries to tell Cameron how he feels uncomfortable with his mom, Barb Tucker. Meanwhile, Haley breaks up with Dylan much to Phil's dismay and Claire's delight. Jay has a little stomach ache that gets exacerbated when he and Manny look it up on the Internet.

With some urging from Claire, Jay begrudgingly agrees to return to ClosetCon this year, and things get interesting when Jay is reunited with some old colleagues. Cam takes Mitch and Lily to the Tucker family farm for the first time and is excited to fold them into country life, that is until Grams pays an unexpected visit. And back at home, Phil, Gloria and the kids get into some mischief involving Jay’s very delicate Apollo 13 spacecraft model

Mitch and Cam’s big day is finally here and nothing can ruin it, until nothing turns into a whole lot of somethings and puts wedding planner extraordinaire Pepper Saltzman to the test. Meanwhile, Jay and Gloria host the Tuckers, Phil squeezes in an eye procedure before the festivities and Claire embraces her role as “best woman".

The wedding day chaos continue as the entire party shifts from one contingency plan to another. Guests start to get testy, Mitchell and Cameron are feeling discouraged and poor Claire shows physical wear and tear, but an unexpected turn of events leads to the ceremony we’ve all been waiting for.

After recent trips take the Dunphys to New York; Mitch, Cam and Lily to the Midwest; and Jay, Gloria, Manny and Joe to Juarez, Mexico; the Pritchett-Dunphy-Tucker clan reunites for Father’s Day.