Andaba, a lanky teen with a secret addiction, finds himself once again in the throes of self-pleasure. His sister, home unexpectedly, hears the rhythmic thumping against the wall and investigates. Catching him mid-act, she's both shocked and intrigued by the sight of her brother's engorged cock. Andaba, mortified, tries to cover up, but his sister's gaze is locked onto his throbbing member, her own body responding to the unexpected sight.