Lenny has decided to relocate his family back to the small town to have his kids grow up where he and his friends grew up. This time around, the grownups are the ones learning lessons from their kids on a day notoriously full of surprises: the last day of school.

"Kassie, a smart, fun-loving single woman..., despite her neurotic best friend Wally's ... objections, decides it's time to have a baby--even if it means doing it herself-- with a little help from a charming sperm donor... But, unbeknownst to her, Kassie's plans go awry because of a last-minute switch that isn't discovered until seven years later-- when Wally gets acquainted with Kassie's cute--though slightly neurotic--son"--Container.

Ronny's world is turned upside down when he inadvertently sees something he should not have and makes it his mission to get answers. As the amateur investigation dissolves his world into comic mayhem, he learns that his best friend Nick has a few secrets of his own. Now, Ronny must decide what will happen if he reveals the truth.