Dan and Caroline are happily anticipating an empty nest as their daughter, Molly, gets ready for college, but everything changes when Molly reveals she is pregnant; Caroline and Dan meet Molly's boyfriend, Junior, and his parents.

Things get awkward when Caroline runs into Molly and Junior in the doctor's office waiting room; Dan goes to Miguel's boxing gym to get in shape.

When his partner shows him his vacation pictures, it pushes Dan over the edge and he buys a used RV, which does not thrill Caroline. She decides to get even but ends up in an emotional crisis. Meanwhile, Lisette gets jealous when she meets an ex-girlfriend of Miguel's, who just happens to be her son's teacher. And Junior is having trouble getting romantic with Molly in his future father-in-law's house.