Ryan and Sharon specialize in finding antiques. They are private investigators and their agency Hidden Clues is mostly approached by the owners of private collections who have been robbed. They do not want to contact the police, since the exhibits of their collections are not always obtained by legal means, therefore they attract private detectives. Our heroes received a similar order and must return the gold coins of ancient times, which were stolen the day before, to the client. The trail led the hunters to Mambora Island. The kidnappers stopped there, trying to lay low until the search stopped. The island seems to be small, but this is a resort place and at this time of the year it is full of tourists, so it will not be easy to find thieves in Hidden Clues.