When Greg and Jen take Lark on her first airplane trip, their parental skills are upstaged by another couple travelling with their baby. Also, Joan and John attempt to smuggle their dog, Tank, onto the plane; Matt and Colleen miss their flights when they accept travel vouchers for airline credits; and Heather and Tim run into countless obstacles when trying to get to the airport on time.

In the season finale, when Colleen and Matt miss all the flights to Mexico for their wedding, they question if they will ever get married. Also, Greg and Jen get into trouble when they share a cookie with a fellow plane passenger who has a severe allergic reaction to it, Joan and John rush their dog to the vet after he swallows Matt's wedding ring, and the Hughes family moves into Tyler and Clementine's tiny house when a fire breaksout in their kitchen.