In a playful nod to the vibrant beach party films of the 1960s, a former teen idol couple, now middle-aged parents, revisit their former California beach haunts. The husband, now a car dealership owner in Ohio, and his homemaking wife decide to take their family on vacation back to the sunny beaches of Los Angeles. Their teenage daughter, who's been living in California, is surprised by their visit. Upon arrival, they find themselves swept up in the nostalgic and carefree lifestyle they once enjoyed. While rekindling past friendships and rivalries, they discover their daughter has become involved with a charismatic surfer.

As the sun-drenched days progress, the family encounters various adventures that test their relationships and values. Old flames are reignited and longtime feuds are humorously revived, highlighting generational differences and challenging the couple to reconcile their past with their present. The parents grapple with their desires for adventure and responsibility while trying to connect with their daughter's life. Surrounded by colorful characters from their past, they navigate a series of comedic escapades that include beach picnics, wild surf challenges, and unexpected musical interludes. Amidst the nostalgia and hilarity, each member of the family learns valuable lessons about love, togetherness, and embracing one's identity, leading them to reflect on what matters most as they rediscover the joy and unity that comes with being back at the beach.