A simple plant sale turns into a major neighborhood mystery when a very unusual leafy green goes missing. Nate the Great's friend Oliver is devastated after losing the special plant he just bought at Rosamond's peculiar Adopt-A-Weed sale. This is not just an ordinary dandelion or a boring clover; Oliver is convinced that it is a powerful Superweed. Always ready to help a friend in need, Nate takes the case. Accompanied by his trusty dog, Sludge, the young detective begins a massive search that takes them deep into the woods, across the local park, and even straight into the quiet library. Finding one specific weed in a world full of plants seems nearly impossible, but Nate is determined to weed out the truth. Readers will enjoy digging through the evidence as Nate discovers that the biggest and most important clue might just be hiding right under his nose the entire time.