After their mother died, two brothers, Bo and Prosper, run away from their wicked aunt, who wants to separate them. They move to Venice, their mother’s favorite city. They meet there a bunch of homeless kids led by a boy called The Thief Lord. He involves them in a tempting and dangerous life, hidden behind beautiful facades of old Venetian mansions. The brothers will face incredible adventures, brain blowing riddles, terrifying secrets, and, of course, new friends.