Indigo Tea Shop owner Theodosia Browning spots the dead body of local art dealer Harper Fisk floating off the Charleston coast while she was helping out the Sea Turtle Protection League and springs into action to find the killer and the connection between Fisk and the sunken treasure rumored to be somewhere near Halliehurst Beach.

In this final episode of the Harte family saga, the Harte women find themselves in the midst of weddings, in the hold of intrigue, and at the crossroads of the old ways and the new. Linnet O'Neill battles to modernize the family business; Tessa Fairley, is ready to start a new life after her divorce, and India Standish, is thrown off balance when her fiance's daughter comes to live with them.