As the rain pelts against the window, two siblings huddle close, their bodies generating enough heat to make the room steamy. They're both aware of the tension, the unspoken longing that's been building. Their eyes lock, and she bites her lip, a silent invitation. He responds, his hands roaming her body, feeling the goosebumps under his touch. She's wet, so wet, and he can't help but slip a finger in, her gasp fueling his desire. They're playing with fire, but they don't care. The world outside can wait.