While on a trip in Hawaii, Marie becomes the proud owner of a necklace, not knowing that it is wanted by a group of bad guys led by Mars. Mystery woman Sinclaire also wants the necklace. This is little more than an extension of the Osmonds' popular television variety show of the time.
Their "acting" here follows the show too: lots of singing, toothy smiles, and cutesy insults. Hawaiian scenery fills in slow times--which occur often.