Confident, resilient surfer McKenzie and her carefree boyfriend Brady catch an epic wave which mysteriously carries them right into the retro surf musical movie "Wet Side Story." Amidst the spontaneous song and dance, there's trouble in paradise - it's bikers versus surfers for control of the local hangout but Mack and Brady unwittingly interfere with the movie's star-crossed plot.

Months after they return from their 1960's beach movie adventure, Mack and Brady receive a surprise real-world visit from Lela, Tanner and their other "Wet Side Story" friends.