In the throes of a sweltering summer night, tiny teens Demi and Myra, fueled by fireworks and youthful curiosity, decide to trade stepfathers for the ultimate patriotic thrill. Will and Jay, caught up in the holiday spirit and the allure of their young, eager stepdaughters, succumb to the taboo temptation. As the night wears on, the families entwine in a web of passionate, forbidden encounters, their moans and the crackling fireworks outside providing a symphony of sin and celebration.