Upton loves to dig for clues, so it's no surprise that when he and the rest of the Charles family discover some unusual old coins while touring the construction site at the twins' new school. Our sleuth is a Bichon Frise (that's "BEE-shon free-ZEY"), a little white dog and he always finds himself in interesting situations. And this time, there is something very familiar about the silver dollars he uncovers. Could they be from a bank robbery? Come along with Upton as his efforts lead to the discovery of Lost Loot.