After fleeing to Venice, Prosper and Bo are taken in by the Thief Lord, who leads a group of street-smart children in a life of thievery to survive. The Thief Lord, whose real name is Scipio, is charismatic and skilled at evading capture, but he also harbors a mystery about his own past.
The group's latest heist involves stealing a valuable wooden wing from a rich gentleman named Conte. But when they discover that the wing is actually part of a magical merry-go-round that allows the rider to time travel, they find themselves caught in a dangerous game of cat and mouse with both the Conte and a detective hot on their trail.
As the children try to navigate their way through the dangers of theft and deception, they also uncover secrets about their own pasts and the true power of the magical merry-go-round. With the help of a kind-hearted bookstore owner and her son, the children must decide whether to use the treasure for their own gain or to set things right and restore order to their chaotic lives.
The Thief Lord is a heartwarming tale of friendship, adventure, and the power of belief in magic and the goodness of the human spirit. It is a story of courage and redemption, as the children learn that sometimes the greatest treasures are not material possessions, but the bonds of love and loyalty that they form with each other.