The Sinestra twins' father is disappearing inward. As his dementia consumes who he used to be, Stephanie and Stephen take over his boat and his legacy- eking out a living hauling junk and treasure out of the depths of the Hudson River. Floating in the murk and the gloom the twins discover a strange and twisted creature the locals call the River Demon. A beast who emits a venom when in pain that somehow miraculously heals whoever's bloodstream it enters- at least temporarily...