In the heart of LA, a brother and sister find themselves alone, their parents out for the day. Boredom turns to curiosity, and curiosity to desire as they share a bottle of milk, the creamy substance dripping down their chins and onto their clothes. The sister, writhing with lust, reaches out and touches her brother's hardening cock through his pants. He responds in kind, sliding his hand up her thigh and under her skirt. Their bodies press together, their breaths ragged as they give in to the taboo pleasure, the taste of milk still fresh on their lips.