A widower, his three young children, and a bombshell nanny get to know each other better when circumstances have them living together aboard a badly neglected houseboat.
At 35, Tripp has an interesting job, a hip car, a passion for sailing, an active dating life, and a great house - trouble is, he still lives with his parents, Al and Sue, who are not happy about it. Al and Sue are fascinated when friends whose adult son has recently moved away from home reveal they hired an expert to help. In desperation to push Tripp out of the nest once and for all, Al and Sue hatch a plan to hire Paula, an "interventionist," who has a formula in these cases.
In an effort to prevent family history from repeating itself, meddlesome mom Daphne Wilder attempts to set up her youngest daughter, Milly, with Mr. Right. Meanwhile, her other daughters try to keep their mom's good intentions under control.
Thirty-something Isabelle spends her time going from her tiny, solitary West Side apartment to that of her grandmother on the Lower East Side. While her grandmother plots to find her a romantic match, Isabelle is courted by a married, worldly author, Anton, yet can't seem to shake the down-to-earth appeal of Sam, a pickle vendor.