An outrageously hilarious race against the clock begins when Savannah Sprunt Fairchild Honeycutt agrees to get her feisty mother all the way from Alabama to California in time for her brother’s wedding. Savannah’s problem: Mama won’t fly. With only four days to make it to the ceremony, this determined daughter has no choice but to drive cross-country with her equally willful mother, Norleen Sprunt, in Mama’s vintage sedan. As Savannah steels herself for this hastily conceived road trip, another outrageous complication arises: the bubbly, over-eager bride-to-be arrives unannounced. Hayley Quinn, delighted to finally meet her future in-laws, is convinced that travelling together to her wedding is the perfect way to bond. The folly of her decision quickly becomes apparent when the journey begins and chaos ensues.