Treasures of the Temple of Jerusalem. It is believed that they were plundered by the crusaders during the capture of Constantinople. Some artifacts surfaced in Europe at different times, but no one managed to find out what happened to the main relic of the temple - the giant golden seven-branched menorah. Where is it hidden? ?How to find it? Underwater archaeologist and adventurer Jack Howard is confident that he knows the answers to these questions. Step by step, he approaches his goal, following the instructions scattered throughout ancient documents that are stored in various countries. But he is invisibly followed by those who intend to take advantage of the fruits of his efforts and destroy him...