In the quiet confines of their shared bedroom, two brothers, both in their late teens, find themselves alone and horny. One, a curious 18-year-old, can't help but notice his older brother's growing bulge as he changes. The younger brother, emboldened by his hormones and the privacy, begins to stroke his own hardening cock. The older brother, caught in the act, watches as his younger sibling pleasures himself, his breath hitching as he takes in the sight of the younger's eager masturbation.