Poppy the dalmatian cannot wait to go on a fun seaside vacation with her family! When they tie a cool skull-and-crossbones scarf around her neck, Poppy knows exactly what she is meant to be. She is going to be a fierce pirate dog, ready for a life of exciting adventures on the high seas. There is just one huge problem. To be a real pirate dog, Poppy needs a pirate ship. But boats bob up and down, big waves splash over the sides, and the water is full of strange, scary creatures. Poppy tries her best to be brave on a fishing boat, a pedal boat, and even a fast speedboat, but she is terrified of all of them! Feeling like a failure, Poppy is ready to give up her pirate dreams entirely. Will this scared little puppy ever find her sea legs and the perfect pirate ship before it is time to go back home?