One of the girls has cleverly hid the logbook. There is only one way for him to find it. He has to make them talk. If the first painfully tight bondage position doesn't loosen their tongues, perhaps the second one will. Or the next, or the next. Dirk is determined to get what he came after. The girls are equally determined not to let him have it. The result is an exciting undersea adventure with erotic overtones of bondage and domination!