In the sultry heat of summer, a teen boy, lonely and horny, retreats to his room to relieve his urges. His sister, equally restless, enters, catching him mid-stroke. Instead of leaving, she joins him, curious and excited. He tentatively strokes his cock, while she watches, then touches herself, her eyes locked on his throbbing member. They edge each other, their breathing ragged, until she can't help but lean in, taking him into her mouth. He groans, his cock pulsing as she sucks him off, bringing him to a shuddering climax.