As Ron and Mark celebrate nature with a blowjob in the sun, a pair of hiking city boys get a glimpse of the action and race over to join the fun. Mark shoos off Jimmy and Wayne, who rush away to the river for skinnydipping. Ron is not bothered by the horny couple who want to join in, so they relent and hike on down to watch the pair's naked splash in the cool river water.

They find the hikers naked and kissing on the banks, and watch them jerking each other. "Look at those two, I didn't know they were swingers!" Mark exclaims, but Ron is too turned on to add anything but a nod of agreement. Wayne sucks and then rims Jimmy on a thick sleeping bag along the rocky bank while Ron and Mark look on. He slathers a finger with lube and works it into Jimmy's hole, then plows his dick into the sunkissed hiker. Jimmy lifts his legs for his buddy to fuck him deep and hard. They end their session sucking each other in the warm afternoon sun and when Wayne is about to cum, Mark and Ron interrupt playfully and invite them to the cabin for coffee and fun.