Two curious teens, a brother and sister, find themselves alone and horny. They start tentatively, the sister sucking her brother's rock-hard cock, her innocent eyes wide with curiosity. They progress to a messy sixty-nine, their bodies glistening with spit and pre-cum. The brother pounds his sister's tight pussy, filling her with his hot load, only to find their parents walking in on the taboo act, leaving them in a mess of guilt and cum.