In the sultry heat of Maranhão, a forbidden fruit ripens as a curious girl stumbles upon her sister's secret life. The sister's lover, a virile fisherman, returns home to find the two girls in a compromising embrace. Driven by lust and the taboo of their situation, they entwine in a passionate, kinky dance, exploring each other's bodies with eager, slick fingers and hungry mouths, until they're left panting and spent, their secret now a shared, sultry truth.