A rainy day. An enormous cardboard box. Three friends ready for an adventure.Ruby's outdoor plans are washed out, but a cardboard box gives her a wonderful idea: build a rocket and travel above the rain! With Sunny as captain, Leo as map reader, and Ruby as builder, SPARKLE ONE is ready to launch.Their mission? Find the missing giggle of a yellow paper moon.Together, the friends imagine sleepy Pillow Planet, wobbling paper rings, and a sky full of stars. But when the rocket's cardboard roof tears, Ruby worries their journey is over. With a helping hand, a clever paper patch, and some wonderfully silly sounds, the explorers discover that an unexpected change can become the best part of an adventure.Ruby and the Rainy Day Rocket is Book 5 in the Mighty Pals series by Kelly Kolek. Written for children ages 4-9, this illustrated story celebrates imaginative play, friendship, teamwork, and finding joy when plans go wrong.Warm humor and an inclusive cast invite young readers to join the adventure in their own way. Ideal for reading aloud at home or in the classroom, the story opens conversations about asking for help, trying another approach, and creating something together.A closing pretend-planet activity encourages children to dream up a world of their own-with one wonderfully silly sound.