20 years after the dimwits set out on their first adventure, they head out in search of one of their long lost children in the hope of gaining a new kidney.
Artie and Diane agree to look after their three grandkids when their type-A helicopter parents need to leave town for work. Problems arise when the kids' 21st-century behavior collides with Artie and Diane's old-school methods.
Rattled by sudden unemployment, a Manhattan couple surveys alternative living options, ultimately deciding to experiment with living on a rural commune where free love rules.
