In the ruins of Nim Bis Rub, in Babylon, is a band of smugglers den. There goes Nemsi Kara Ben and his faithful friend. One night, while camping, they surprise three smugglers and, after a hard-fought struggle, manage to reduce them and take possession of the rings that are their trademark. Then they go to Baghdad and there, a character who wears a ring of smugglers, which has seen Kara's, confuses him with one of the band.