'Max and his robo-dog, Oscar, are baffled by the discovery of a tiny device that looks like a grain of rice. Using their future-sleuthy skills, they figure out what it is – an ID chip that should have been implanted into a very special dog ... 400 years ago! They unleash the truth of a long-lost treasure. But, Bluggsville's savviest sleuths could be hounded off the treasure trail for good.'
Source: Publisher's blurb.