Remi and Leo's parents get married on the roof of the Whippet Hotel, and Merganzer Whippet shows up to send them off on a honeymoon, conveniently leaving the boys alone to solve the current problem -- the hotel owes $700,000 in back taxes. Not a problem, as long as the boys are willing to undertake a dangerous journey to the sub floors of the hotel to retrieve four Floogers, a zip rope, and the iron box. Since Ms. Sparks has returned with the grungy Mr. Carp and demanded the payment lest she herself buy the hotel, the boys venture with Betty the duck into a dangerous elevator that takes them into even weirder worlds below the hotel. Even with the help of burping monkeys, Dr. Flart and his delicious Flart's Fizz, a host of Mr. Whippet's helpers and even Mr. Carp, can the boys come up with the money and save the most sought-after piece of real estate in New York from falling into the wrong hands?
This has a lot of fun things that younger readers will enjoy -- atomic burps, rooms full of cake, talking robots, and kids saving the day. Blurb after blurb compares this to Ellen Raskin or Roald Dahl, which is a fair comparison. I did like this better than the first book, Floors.