Momo is a young orphan girl who lives in the ruins of an old Roman amphitheater and becomes friends with everybody in the neighborhood. But when a powerful international corporation starts stealing everybody’s time, nobody has any time left for her, let alone their friends or families. Momo, together with Master Hora, the custodian of time, are the only ones who can go up against the time thieves before all is lost forever.

Rimini, 1991. For more than a year, the uno bianca gang - they always use a white Fiat Uno - has plagued the area. Their crimes are violent, sometimes killing carabineri, and there's no particular pattern: a bank one day, a petrol station the next, extortion of a small business the next. Are they terrorists? A foreign gang? Tied to the Mafia? After a particularly bloody shootout, two detectives are assigned to start fresh: they go through the notebooks of previous investigators and they interview a few witnesses again. They find a pattern in the crimes and predict the next assault, but the special task force in Bologna is dismissive. Can they carry on alone; how far will they get?