Mango and Brash are the InvestiGators: sewer-loving S.U.I.T. operatives and the bane of supervillains everywhere! The InvestiGators are undercover and on the case, thanks to their Very Exciting Spy Technology and tried-and-true, toilet-based travel techniques! And on their first expedition together, they must solve not one, but two riddles! Can Mango and Brash find the clues, solve their cases, and apprehend the criminals? Or will the culprits evade their grasp?