Bored and restless, brother and sister, both in their late teens, find themselves alone in the house. Boredom turns to curiosity as they explore each other's bodies, starting with innocent touches that quickly escalate. The sister, clad in a revealing nightgown, begins to stroke her brother's growing erection through his pajamas. He, in turn, reaches up her gown to cup her breasts, feeling their weight and the hardening nipples. Their breaths grow heavy as they continue to explore, their bodies pressing closer together, seeking friction and release.