When Emil travels by bus to Berlin to visit his grandmother and his cousin, his money is stolen by a crook who specializes in digging tunnels. Emil must get the money back as it is for his grandmother. While following the thief, Emil runs into Gustav, an enterprising young boy who gathers up all his friends to help Emil find the money. Emil's cousin also gets involved and they get into more trouble than they bargained for when Emil's pickpocket turns out to be mixed up with a couple of notorious bank robbers. “Emil and the Three Twins” is another of Emil Tischbein's peculiar adventures, this time by the sea. Of course, the detectives couldn't have an ordinary seaside holiday, and when they become entangled with the mystery of the three acrobat twins and the wicked Herr Anders, it looks as if it's going to turn into a most extraordinary time for them all!