When Marylin sees her stepdad Dorian looking all depressed she tells him they should go camping with their friend JC and her stepdad Mike. That night in their tent, they realize the temperature is way colder than they expected so they decide to swap stepdaughters to share a sleeping bag with and keep each other warm. In the middle of the night, Dorian starts fucking JC and soon Marylin and Mike join them until they’re all fucking each other to keep warm!