An enormous treasure of diamonds, rubies, and emeralds is at the bottom of the ocean, and the recently split-up couple Tess and Ben Finnegan (Matthew McConaughey and Kate Hudson) think they know where it is. Doing research in a dark and cavernous room provides just the spice they need to hook up again. Though that spice also could be attributed to Matthew McConaughey walking or boating around shirtless or in tie-dye during every scene. Whatever. Treasure!