Campinas' gay underground pulses with life as a louveira, a self-proclaimed passivo, lets a fio guide his desires. He's no stranger to the use of fio, but tonight, it's different. His bunda branca and bunda lisa ache for more as he loses himself in the sensation, his mind drifting to the stories he's heard of Itatiba's kinky scene, where fio is more than just a thread, it's a lifestyle.