Tomboy adult childhood friend Rima unexpectedly asks him to be her sex-practice partner. With just one condom and clumsy hands, they begin what is supposed to be a single lesson, but Rima discovers how good sex feels and cannot get enough. Over three days without their parents around, the adult pair lose all restraint, exploring blowjobs, cunnilingus, and raw sex without a break until he ejaculates ten times and they both become addicted to condomless creampies.