Beyond Equestria: Rainbow Dash Rights the Ship

My Little Pony: Beyond Equestria: Rainbow Dash Rights the Ship by G. M. Berrow is the thirty-fourth book in a series of chapter books published by Little, Brown and Company and the fourth entry in the "Beyond Equestria" series.

In this book, Rainbow Dash and Captain Celaeno's pirate crew go on a quest for a long-lost Cloudsdale treasure.

Celaeno comes to Cloudsdale
The story begins with Rainbow Dash staying at her parents' house in Cloudsdale a few hours before the Wonderbolts' anniversary flight show, the "Loop-de-Loop Hoopla". As usual, Bow and Windy smother her with affection, serving her breakfast in bed, and are excited to see her perform. Rainbow informs her parents that she invited some friends from far away to come and watch the show. Moments later, Captain Celaeno and her crew of parrot pirates arrive outside the house in their airship. Using a set of back-mounted jet-propelled sky-packs that they recently traded for, Celaeno and the parrots are able to set foot on the clouds. After they meet Rainbow Dash's parents and get accustomed to walking on the clouds, the group heads to the Wonderbolts show.

When the Loop-de-Loop Hoopla ends, Rainbow's parents and Celaeno's pirates shower her with praise, and she offers to give Celaeno and her crew a tour of the city—after a home-cooked meal by Bow and Windy. During the tour of Cloudsdale, Bow leads the group to the Cloudsdale History Museum, enticing the pirates with the prospect of finding treasure. Inside the museum, Rainbow Dash warns the pirates that the exhibits are only for admiring, not taking. In an effort to rein in their excitement, she offers to tell them stories about Cloudsdale's history.

Celaeno is particularly interested in a large red jewel in the far corner of the museum. According to Rainbow Dash, the jewel is called the Good Fortune Garnet, and it was given to the first founders of Cloudsdale long ago by a mysterious and powerful Alicorn to always bring them good luck. However, the Garnet was stolen a long time ago, and the one on display in the museum is just a glass replica. Celaeno is very intrigued in finding the real Garnet, even more so when she learns that Rainbow Dash drew a map to its supposed location in the Thunder Jungle when she was little. Bow and Windy reveal that they held onto Rainbow's old map for all these years, and with Celaeno's encouragement, Rainbow agrees to go on a quest with her to find the Good Fortune Garnet.

The pirate and the adventurer
After being seen off by Bow Hothoof and Windy Whistles, Rainbow Dash, Captain Celaeno, and the pirates sail away on the airship toward Daring Do's residence for information on the Good Fortune Garnet. The ship lands near Daring Do's cottage, and Rainbow and Celaeno head down to greet her. While Daring Do is happy to see Rainbow Dash, she is wary about having a pirate in her home, but Rainbow assures her that Celaeno and her crew are allies.

Daring is unsure that the Good Fortune Garnet even exists, but Celaeno is certain that it does based on her past experience with the Misfortune Malachite. Daring Do agrees with Celaeno's logic, explaining that some magical relics have polar opposites with opposing properties, such as the Doomed Diadem of Xilati and Tiara of Teotlale.

Rainbow Dash is determined to find the Good Fortune Garnet and return it to Cloudsdale where it belongs. When Daring asks Celaeno why she is so eager to help Rainbow accomplish this, Celaeno says it is because Rainbow and her friends helped her and her crew break free from the Storm King's control. Satisfied by Celaeno's answer, Daring Do agrees to join them in finding the Garnet—under the condition that it be immediately returned to Cloudsdale once they do.