Sydney and Simon are twin mice on a mission to save the wilting flowers in their window box. During a humid heat wave, their window got stuck, and now they can't open it to water their blossoms before the neighborhood flower show. The young chapter book underscores how the characters use STEAM (Science, Technology, Engineering, Arts, and Math) to learn about the water cycle on earth and in the home and, ultimately, to rescue their flowers. Curious readers can learn more in a glossary and author's note.