Caramel and Water Stains is a cozy, fantasy rom-com about a bookstore owner in Northern Ireland, Alfred, who has touch starvation. He accidentally summons a succubus, Ket, who is thrilled to be back in the human realm after over a hundred years and is determined to stay by any means necessary. Meanwhile, two American exchange students have their eyes on the odd couple, looking to spice up their relationship by courting the two together. Polyamory, magic shenanigans, and cute dates ensue in the coastal town of Portstewart.