Abandoned in a park, the two-year-old girl Asia is found by Patty, a circus woman living with her husband Walter in a trailer park in San Basilio on the outskirts of Rome. With the help of Tairo, a teenager who lives with his grandma in an adjacent container, Patti gives the girl a new home for an uncertain period of time. However, Walter is concerned that they may be accused of kidnapping the girl, and he plans to report Asia's presence to the police. . Patty receives a letter from the mother in which she announces that she will collect the girl two days later. They have a farewell party, but the mother does not show up.

Tairo, a young lion-tamer, is unhappy. Losing his lucky charm gives him a reason to set off for a journey across Italy in search of Arthur Robin, a former Mister Universe, who gave him the charm a long time ago.