The players represent members of a children gang (Prosper, Bo, Scipio and Wespe). They travel through Venice, trying to shake off the detective Victor, and to collect a big part of the treasure. The game ends after 10 rounds, when the players have used up their set of travel cards. The player who finished most laps (and thus was able to collect most money from the "star lair" hideout) wins the game.

A course is created by location cards. Each player in turn selects and (secretly) plays one of his set of target cards, with the intention to move to the next free location shown on it. But before he shows the card and makes his move, another player (who plays the role of the detective in this turn) swaps two location cards; he guesses where the player wants to move to, and tries to reduce his progress.