The proprietress of a small restaurant, Murakami Kana, learns a unique tongue technique from a sudden visitor—a business turnaround specialist—and rebrands her establishment as the "Slug Inn," revitalizing its operations. Using her slimy, lingering tongue, she licks everything from customers' toes to their ass holes, bringing them to explosive pleasure with tight handjob strokes. To motivate her tired staff, she boosts morale through mutual masturbation sessions for their viewing pleasure. For the son of a regular customer, she offers premium hospitality: full-body licking and pussy service. Thanks to the landlady's slug-like tongue and sensual skills, both customer traffic and cum flow never cease, making the inn more prosperous than ever!