Kevin and Gretel's grandmas clash at Dave and Carolina's vow renewal while Clem Clam plots revenge.
Plot
The Grant-Gomez family arrives at a county club in order for Dave and Carolina to renew their wedding vows. However, Trudy and Carmen, whose rivalry led to the wedding of their respective son and daughter becoming a disaster, have different ideas regarding the decorations, leaving Kevin and Gretel to keep their grandmothers from arguing. Meanwhile, Clem Clam plots to cover the wedding venue in clam chowder after his last revenge scheme ended in failure.
Upon discovering the clam chowder leaking towards the venue, Hamster and Gretel attempt to stop Clem while Kevin quells Trudy and Carmen's arguing. When the grandmothers finally see the error of their ways, they join Kevin in using their respective desserts to construct a wall that protects the venue from the clam chowder. At the same time, Hamster and Gretel defeat Clem by throwing multiple bouquets at him, leading to a crowd of women attacking him. As Dave and Carolina finish practicing their walk, they are shocked that the venue is a mess, though they are delighted that their mothers are getting along.