It's been a few years since friends and coworkers Charlie Hinton (CUBA GOODING JR.) and Phil Ryerson (PAUL RAE) opened their Daddy Day Car facility, overcame various obstacles along the way, and turned their novel business into a success. Now it's time to take their kids to summer day camp, a prospect that doesn't sit well with Charlie due to his own traumatizing experience at such a place back when he was a kid.
Nevertheless, wife Kim (TAMALA JONES) sends him off with their young son, Ben (SPENCIR BRIDGES), and it's not long before they, Phil, and his son, Max (DALLIN BOYCE), arrive at Camp Driftwood. It's a rundown place with no customers, only one staffer, new guy Dale (JOSH McLERRAN), and an owner, Uncle Morty (BRIAN DOYLE-MURRAY), who doesn't seem to care about anything. That is, except that he refuses to sell the place to Lance Warner (LOCHLYN MUNRO) who runs the nearby upscale Camp Canola and wants to raze this one for the future site of a go-cart track.
When Charlie realizes that Lance is his childhood tormentor grown up with a bully son of his own, he decides to buy a partnership in Camp Driftwood, just to keep it out of Lance's hands. He figures he and Phil can apply their Daddy Day Care knowledge to running the camp and turn the business around, but they aren't ready for the chaos brought about by their new charges.
They include brothers Robert (TAD D'AGOSTINO) and Carl (TAGGART HURTUBISE), the latter of whom might be younger than the former, but is always giving him advice about how to attract the pretty Juliette (TELISE GALANIS). Billy (TYGER RAWLINGS) is the resident bully who picks on the likes of anyone smaller than him, including Jack (TALON G. ACKERMAN) who has an easily upset stomach. Then there's the precocious Becca (MOLLY JEPSON), as well as Mullet Head (ZACHARY ALLEN) whose name describes his hairstyle of choice.
Facing a lien on the camp and thus, by extension his own place, Charlie reluctantly asks his father, retired Marine Col. Buck Hinton (RICHARD GANT) for help, but isn't pleased when he learns that his father's controlling and demeaning ways haven't changed. From that point on, and as Lance puts the pressure on Charlie to sell the place, all while constantly belittling him, his family, and his campers, it's up to the ragtag group to formulate their battle plan and fight back.