In A Slippery Deck, Ariel and her undersea friends discover a deck of cards and a book of instructions aboard a sunken ship. Curious, they decide to learn how to play card games. As they play, Sebastian the crab repeatedly drops his cards — but surprisingly, he keeps winning. The story follows their attempts to understand the game, deal with the chaos of dropped cards, and enjoy the fun of a friendly game together. The tale is lighthearted and centered on friendship, playfulness, and shared laughter under the sea.