Handsome young Sergio (Ricardo Meneses) works the night shift as a trash collector, barreling through the dark streets of Lisbon. His sex life is equally cluttered and obscure. It consists of brief moments of passion shared with strangers in peculiar circumstances: a cop Sergio finds handcuffed in the back seat of his squad car; a night watchman who handcuffs Sergio, then taunts him with his nightstick. Beautiful coworker Fatima (Beatriz Torcato) wants Sergio, but he can respond to her only with violence.

When Sergio becomes obsessed with a handsome stranger-making fetishes of the young man's cast-off motorcycle gloves and tattered Speedo-something dark begins to brew. Is Sergio's nocturnal excursion as a rubber-suited phantom a product of his unfettered imagination, or the ultimate expression of his frustrated libido?

Filled with strange moments, O Fantasma takes a challenging journey to the dark heart of desire.