Zinho lives in the streets. He inhabits the dark and brutal underworld of Real Janeiro. He survives thanks to his juggling skills at crossroads, gathering scraps of attention and money. His life takes a turn when he meets Pat, a wealthy and unattainable young woman.

Determined to escape misery, he strikes a perilous pact with Ratones, a rat with machiavellian charisma. In exchange for his heart, Ratones promises him wealth and power. Zinho must choose between keeping his heart or giving in to the temptation of riches and power.