 Jazz pianist Tom Stewart (Carlson), who lives in a Cape Cod island community, is preparing to marry his fiancée Meg Hubbard (Lugene Sanders).Shortly before the wedding, Tom's old girlfriend Vi Mason (Juli Reding) visits and informs him that she will end his relationship with Meg, using blackmail if necessary.While she is arguing with him atop a lighthouse, the railing she is leaning on gives way.