In a sordid tale of desperation and disease, Novinho, a young man with a penchant for the taboo, seeks satisfaction in the most unsanitary of places. His target: a seemingly innocent rat, a carrier of the insidious leptospirosis. Blind to the risks, Novinho gives in to his primal urges, thrusting wildly until he finds his release. Yet, his momentary pleasure is short-lived, as the insidious bacterium invades his body, leaving him stricken with a severe illness that serves as a harsh lesson in the dangers of unprotected, unsanitary encounters.