Dre, determined to make up for the no-frills, last-minute wedding he and Bow had, organizes an amazing vow renewal for their 15th anniversary. But when Bow's hippie-dippy parents, Alicia and the very white Paul show up unannounced -- bombshells are dropped and old disagreements re-ignite between the two families, especially with Pops and Ruby.

Things begin to fall apart, in more ways than one, when Dre hurts himself playing basketball right before his 40th birthday. He hands the planning of his big party over to his much younger, hipper assistant, fearing he really is getting too old to be cool. Bow and Ruby face off over who can get Dre the best gift, and the kids try to figure out what to give their dad for his special day,.