Upon the arrival of spring this year, Allison, Charlie, and Sierra went to see their friends Selena and her brother Mauricio in the mountainous area. They were taken out on a hike in a nearby forest as Selena wanted to search for the treasure depicted in a map left by her late grandmother, who was an herb huntress. They followed a trail guided by the chemicals of such flowers and plants as snowdrops, daffodils, chili peppers, tea, coffee, turmeric, blueberries, cabbages, broccolis and Brussels sprouts. After spending a morning hiking and searching in the forest, were they able to find the treasure at the end of the trail?
This book is the third in a series of adventures of Allison and Friends into the world of everyday chemistry.