Klaus Weller races down the motorway at 230 km/h wearing a pig mask to make a spectacular marriage proposal to his fiancée Martina. While Tom and Semir pursue him, he escapes after a pile-up. Klaus's workshop is on the verge of bankruptcy, and bank employee Mackeroth and his girlfriend Isabel Stegemann persuade him to rob a bank. But they want to betray him and kill him with a car bomb. In the meantime, Tom and Semir have discovered Klaus' identity.